Merge tag 'upstream-3.5-rc1' of git://git.infradead.org/linux-ubifs
Pull UBI and UBIFS updates from Artem Bityutskiy:
UBIFS:
* Always support xattrs (remove the Kconfig option)
* Always support debugging (remove the Kconfig option)
* A fix for a memory leak on error path
* A number of clean-ups
UBI:
* Always support debugging (remove the Kconfig option)
* Remove "data type" hint support
* Huge amount of renames to prepare for the fastmap wor
* A lot of clean-ups
* tag 'upstream-3.5-rc1' of git://git.infradead.org/linux-ubifs: (54 commits)
UBI: modify ubi_wl_flush function to clear work queue for a lnum
UBI: introduce UBI_ALL constant
UBI: add lnum and vol_id to struct ubi_work
UBI: add volume id struct ubi_ainf_peb
UBI: add in hex the value for UBI_INTERNAL_VOL_START to comment
UBI: rename scan.c to attach.c
UBI: remove scan.h
UBI: rename UBI_SCAN_UNKNOWN_EC
UBI: move and rename attach_by_scanning
UBI: rename _init_scan functions
UBI: amend comments after all the renamings
UBI: rename ubi_scan_leb_slab
UBI: rename ubi_scan_move_to_list
UBI: rename ubi_scan_destroy_ai
UBI: rename ubi_scan_get_free_peb
UBI: rename ubi_scan_rm_volume
UBI: rename ubi_scan_find_av
UBI: rename ubi_scan_add_used
UBI: remove unused function
UBI: make ubi_scan_erase_peb static and rename
...
diff --git a/drivers/mtd/ubi/Kconfig b/drivers/mtd/ubi/Kconfig
index 4dcc752..738ee8d 100644
--- a/drivers/mtd/ubi/Kconfig
+++ b/drivers/mtd/ubi/Kconfig
@@ -52,12 +52,4 @@
work on top of UBI. Do not enable this unless you use legacy
software.
-config MTD_UBI_DEBUG
- bool "UBI debugging"
- depends on SYSFS
- select DEBUG_FS
- select KALLSYMS
- help
- This option enables UBI debugging.
-
endif # MTD_UBI
diff --git a/drivers/mtd/ubi/Makefile b/drivers/mtd/ubi/Makefile
index c9302a545..a0803ac 100644
--- a/drivers/mtd/ubi/Makefile
+++ b/drivers/mtd/ubi/Makefile
@@ -1,7 +1,6 @@
obj-$(CONFIG_MTD_UBI) += ubi.o
-ubi-y += vtbl.o vmt.o upd.o build.o cdev.o kapi.o eba.o io.o wl.o scan.o
-ubi-y += misc.o
+ubi-y += vtbl.o vmt.o upd.o build.o cdev.o kapi.o eba.o io.o wl.o attach.o
+ubi-y += misc.o debug.o
-ubi-$(CONFIG_MTD_UBI_DEBUG) += debug.o
obj-$(CONFIG_MTD_UBI_GLUEBI) += gluebi.o
diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
new file mode 100644
index 0000000..bd27cbb
--- /dev/null
+++ b/drivers/mtd/ubi/attach.c
@@ -0,0 +1,1631 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2006
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Artem Bityutskiy (Битюцкий Артём)
+ */
+
+/*
+ * UBI attaching sub-system.
+ *
+ * This sub-system is responsible for attaching MTD devices and it also
+ * implements flash media scanning.
+ *
+ * The attaching information is represented by a &struct ubi_attach_info'
+ * object. Information about volumes is represented by &struct ubi_ainf_volume
+ * objects which are kept in volume RB-tree with root at the @volumes field.
+ * The RB-tree is indexed by the volume ID.
+ *
+ * Logical eraseblocks are represented by &struct ubi_ainf_peb objects. These
+ * objects are kept in per-volume RB-trees with the root at the corresponding
+ * &struct ubi_ainf_volume object. To put it differently, we keep an RB-tree of
+ * per-volume objects and each of these objects is the root of RB-tree of
+ * per-LEB objects.
+ *
+ * Corrupted physical eraseblocks are put to the @corr list, free physical
+ * eraseblocks are put to the @free list and the physical eraseblock to be
+ * erased are put to the @erase list.
+ *
+ * About corruptions
+ * ~~~~~~~~~~~~~~~~~
+ *
+ * UBI protects EC and VID headers with CRC-32 checksums, so it can detect
+ * whether the headers are corrupted or not. Sometimes UBI also protects the
+ * data with CRC-32, e.g., when it executes the atomic LEB change operation, or
+ * when it moves the contents of a PEB for wear-leveling purposes.
+ *
+ * UBI tries to distinguish between 2 types of corruptions.
+ *
+ * 1. Corruptions caused by power cuts. These are expected corruptions and UBI
+ * tries to handle them gracefully, without printing too many warnings and
+ * error messages. The idea is that we do not lose important data in these
+ * cases - we may lose only the data which were being written to the media just
+ * before the power cut happened, and the upper layers (e.g., UBIFS) are
+ * supposed to handle such data losses (e.g., by using the FS journal).
+ *
+ * When UBI detects a corruption (CRC-32 mismatch) in a PEB, and it looks like
+ * the reason is a power cut, UBI puts this PEB to the @erase list, and all
+ * PEBs in the @erase list are scheduled for erasure later.
+ *
+ * 2. Unexpected corruptions which are not caused by power cuts. During
+ * attaching, such PEBs are put to the @corr list and UBI preserves them.
+ * Obviously, this lessens the amount of available PEBs, and if at some point
+ * UBI runs out of free PEBs, it switches to R/O mode. UBI also loudly informs
+ * about such PEBs every time the MTD device is attached.
+ *
+ * However, it is difficult to reliably distinguish between these types of
+ * corruptions and UBI's strategy is as follows (in case of attaching by
+ * scanning). UBI assumes corruption type 2 if the VID header is corrupted and
+ * the data area does not contain all 0xFFs, and there were no bit-flips or
+ * integrity errors (e.g., ECC errors in case of NAND) while reading the data
+ * area. Otherwise UBI assumes corruption type 1. So the decision criteria
+ * are as follows.
+ * o If the data area contains only 0xFFs, there are no data, and it is safe
+ * to just erase this PEB - this is corruption type 1.
+ * o If the data area has bit-flips or data integrity errors (ECC errors on
+ * NAND), it is probably a PEB which was being erased when power cut
+ * happened, so this is corruption type 1. However, this is just a guess,
+ * which might be wrong.
+ * o Otherwise this it corruption type 2.
+ */
+
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/crc32.h>
+#include <linux/math64.h>
+#include <linux/random.h>
+#include "ubi.h"
+
+static int self_check_ai(struct ubi_device *ubi, struct ubi_attach_info *ai);
+
+/* Temporary variables used during scanning */
+static struct ubi_ec_hdr *ech;
+static struct ubi_vid_hdr *vidh;
+
+/**
+ * add_to_list - add physical eraseblock to a list.
+ * @ai: attaching information
+ * @pnum: physical eraseblock number to add
+ * @vol_id: the last used volume id for the PEB
+ * @lnum: the last used LEB number for the PEB
+ * @ec: erase counter of the physical eraseblock
+ * @to_head: if not zero, add to the head of the list
+ * @list: the list to add to
+ *
+ * This function allocates a 'struct ubi_ainf_peb' object for physical
+ * eraseblock @pnum and adds it to the "free", "erase", or "alien" lists.
+ * It stores the @lnum and @vol_id alongside, which can both be
+ * %UBI_UNKNOWN if they are not available, not readable, or not assigned.
+ * If @to_head is not zero, PEB will be added to the head of the list, which
+ * basically means it will be processed first later. E.g., we add corrupted
+ * PEBs (corrupted due to power cuts) to the head of the erase list to make
+ * sure we erase them first and get rid of corruptions ASAP. This function
+ * returns zero in case of success and a negative error code in case of
+ * failure.
+ */
+static int add_to_list(struct ubi_attach_info *ai, int pnum, int vol_id,
+ int lnum, int ec, int to_head, struct list_head *list)
+{
+ struct ubi_ainf_peb *aeb;
+
+ if (list == &ai->free) {
+ dbg_bld("add to free: PEB %d, EC %d", pnum, ec);
+ } else if (list == &ai->erase) {
+ dbg_bld("add to erase: PEB %d, EC %d", pnum, ec);
+ } else if (list == &ai->alien) {
+ dbg_bld("add to alien: PEB %d, EC %d", pnum, ec);
+ ai->alien_peb_count += 1;
+ } else
+ BUG();
+
+ aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);
+ if (!aeb)
+ return -ENOMEM;
+
+ aeb->pnum = pnum;
+ aeb->vol_id = vol_id;
+ aeb->lnum = lnum;
+ aeb->ec = ec;
+ if (to_head)
+ list_add(&aeb->u.list, list);
+ else
+ list_add_tail(&aeb->u.list, list);
+ return 0;
+}
+
+/**
+ * add_corrupted - add a corrupted physical eraseblock.
+ * @ai: attaching information
+ * @pnum: physical eraseblock number to add
+ * @ec: erase counter of the physical eraseblock
+ *
+ * This function allocates a 'struct ubi_ainf_peb' object for a corrupted
+ * physical eraseblock @pnum and adds it to the 'corr' list. The corruption
+ * was presumably not caused by a power cut. Returns zero in case of success
+ * and a negative error code in case of failure.
+ */
+static int add_corrupted(struct ubi_attach_info *ai, int pnum, int ec)
+{
+ struct ubi_ainf_peb *aeb;
+
+ dbg_bld("add to corrupted: PEB %d, EC %d", pnum, ec);
+
+ aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);
+ if (!aeb)
+ return -ENOMEM;
+
+ ai->corr_peb_count += 1;
+ aeb->pnum = pnum;
+ aeb->ec = ec;
+ list_add(&aeb->u.list, &ai->corr);
+ return 0;
+}
+
+/**
+ * validate_vid_hdr - check volume identifier header.
+ * @vid_hdr: the volume identifier header to check
+ * @av: information about the volume this logical eraseblock belongs to
+ * @pnum: physical eraseblock number the VID header came from
+ *
+ * This function checks that data stored in @vid_hdr is consistent. Returns
+ * non-zero if an inconsistency was found and zero if not.
+ *
+ * Note, UBI does sanity check of everything it reads from the flash media.
+ * Most of the checks are done in the I/O sub-system. Here we check that the
+ * information in the VID header is consistent to the information in other VID
+ * headers of the same volume.
+ */
+static int validate_vid_hdr(const struct ubi_vid_hdr *vid_hdr,
+ const struct ubi_ainf_volume *av, int pnum)
+{
+ int vol_type = vid_hdr->vol_type;
+ int vol_id = be32_to_cpu(vid_hdr->vol_id);
+ int used_ebs = be32_to_cpu(vid_hdr->used_ebs);
+ int data_pad = be32_to_cpu(vid_hdr->data_pad);
+
+ if (av->leb_count != 0) {
+ int av_vol_type;
+
+ /*
+ * This is not the first logical eraseblock belonging to this
+ * volume. Ensure that the data in its VID header is consistent
+ * to the data in previous logical eraseblock headers.
+ */
+
+ if (vol_id != av->vol_id) {
+ ubi_err("inconsistent vol_id");
+ goto bad;
+ }
+
+ if (av->vol_type == UBI_STATIC_VOLUME)
+ av_vol_type = UBI_VID_STATIC;
+ else
+ av_vol_type = UBI_VID_DYNAMIC;
+
+ if (vol_type != av_vol_type) {
+ ubi_err("inconsistent vol_type");
+ goto bad;
+ }
+
+ if (used_ebs != av->used_ebs) {
+ ubi_err("inconsistent used_ebs");
+ goto bad;
+ }
+
+ if (data_pad != av->data_pad) {
+ ubi_err("inconsistent data_pad");
+ goto bad;
+ }
+ }
+
+ return 0;
+
+bad:
+ ubi_err("inconsistent VID header at PEB %d", pnum);
+ ubi_dump_vid_hdr(vid_hdr);
+ ubi_dump_av(av);
+ return -EINVAL;
+}
+
+/**
+ * add_volume - add volume to the attaching information.
+ * @ai: attaching information
+ * @vol_id: ID of the volume to add
+ * @pnum: physical eraseblock number
+ * @vid_hdr: volume identifier header
+ *
+ * If the volume corresponding to the @vid_hdr logical eraseblock is already
+ * present in the attaching information, this function does nothing. Otherwise
+ * it adds corresponding volume to the attaching information. Returns a pointer
+ * to the allocated "av" object in case of success and a negative error code in
+ * case of failure.
+ */
+static struct ubi_ainf_volume *add_volume(struct ubi_attach_info *ai,
+ int vol_id, int pnum,
+ const struct ubi_vid_hdr *vid_hdr)
+{
+ struct ubi_ainf_volume *av;
+ struct rb_node **p = &ai->volumes.rb_node, *parent = NULL;
+
+ ubi_assert(vol_id == be32_to_cpu(vid_hdr->vol_id));
+
+ /* Walk the volume RB-tree to look if this volume is already present */
+ while (*p) {
+ parent = *p;
+ av = rb_entry(parent, struct ubi_ainf_volume, rb);
+
+ if (vol_id == av->vol_id)
+ return av;
+
+ if (vol_id > av->vol_id)
+ p = &(*p)->rb_left;
+ else
+ p = &(*p)->rb_right;
+ }
+
+ /* The volume is absent - add it */
+ av = kmalloc(sizeof(struct ubi_ainf_volume), GFP_KERNEL);
+ if (!av)
+ return ERR_PTR(-ENOMEM);
+
+ av->highest_lnum = av->leb_count = 0;
+ av->vol_id = vol_id;
+ av->root = RB_ROOT;
+ av->used_ebs = be32_to_cpu(vid_hdr->used_ebs);
+ av->data_pad = be32_to_cpu(vid_hdr->data_pad);
+ av->compat = vid_hdr->compat;
+ av->vol_type = vid_hdr->vol_type == UBI_VID_DYNAMIC ? UBI_DYNAMIC_VOLUME
+ : UBI_STATIC_VOLUME;
+ if (vol_id > ai->highest_vol_id)
+ ai->highest_vol_id = vol_id;
+
+ rb_link_node(&av->rb, parent, p);
+ rb_insert_color(&av->rb, &ai->volumes);
+ ai->vols_found += 1;
+ dbg_bld("added volume %d", vol_id);
+ return av;
+}
+
+/**
+ * compare_lebs - find out which logical eraseblock is newer.
+ * @ubi: UBI device description object
+ * @aeb: first logical eraseblock to compare
+ * @pnum: physical eraseblock number of the second logical eraseblock to
+ * compare
+ * @vid_hdr: volume identifier header of the second logical eraseblock
+ *
+ * This function compares 2 copies of a LEB and informs which one is newer. In
+ * case of success this function returns a positive value, in case of failure, a
+ * negative error code is returned. The success return codes use the following
+ * bits:
+ * o bit 0 is cleared: the first PEB (described by @aeb) is newer than the
+ * second PEB (described by @pnum and @vid_hdr);
+ * o bit 0 is set: the second PEB is newer;
+ * o bit 1 is cleared: no bit-flips were detected in the newer LEB;
+ * o bit 1 is set: bit-flips were detected in the newer LEB;
+ * o bit 2 is cleared: the older LEB is not corrupted;
+ * o bit 2 is set: the older LEB is corrupted.
+ */
+static int compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb,
+ int pnum, const struct ubi_vid_hdr *vid_hdr)
+{
+ void *buf;
+ int len, err, second_is_newer, bitflips = 0, corrupted = 0;
+ uint32_t data_crc, crc;
+ struct ubi_vid_hdr *vh = NULL;
+ unsigned long long sqnum2 = be64_to_cpu(vid_hdr->sqnum);
+
+ if (sqnum2 == aeb->sqnum) {
+ /*
+ * This must be a really ancient UBI image which has been
+ * created before sequence numbers support has been added. At
+ * that times we used 32-bit LEB versions stored in logical
+ * eraseblocks. That was before UBI got into mainline. We do not
+ * support these images anymore. Well, those images still work,
+ * but only if no unclean reboots happened.
+ */
+ ubi_err("unsupported on-flash UBI format\n");
+ return -EINVAL;
+ }
+
+ /* Obviously the LEB with lower sequence counter is older */
+ second_is_newer = (sqnum2 > aeb->sqnum);
+
+ /*
+ * Now we know which copy is newer. If the copy flag of the PEB with
+ * newer version is not set, then we just return, otherwise we have to
+ * check data CRC. For the second PEB we already have the VID header,
+ * for the first one - we'll need to re-read it from flash.
+ *
+ * Note: this may be optimized so that we wouldn't read twice.
+ */
+
+ if (second_is_newer) {
+ if (!vid_hdr->copy_flag) {
+ /* It is not a copy, so it is newer */
+ dbg_bld("second PEB %d is newer, copy_flag is unset",
+ pnum);
+ return 1;
+ }
+ } else {
+ if (!aeb->copy_flag) {
+ /* It is not a copy, so it is newer */
+ dbg_bld("first PEB %d is newer, copy_flag is unset",
+ pnum);
+ return bitflips << 1;
+ }
+
+ vh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);
+ if (!vh)
+ return -ENOMEM;
+
+ pnum = aeb->pnum;
+ err = ubi_io_read_vid_hdr(ubi, pnum, vh, 0);
+ if (err) {
+ if (err == UBI_IO_BITFLIPS)
+ bitflips = 1;
+ else {
+ ubi_err("VID of PEB %d header is bad, but it "
+ "was OK earlier, err %d", pnum, err);
+ if (err > 0)
+ err = -EIO;
+
+ goto out_free_vidh;
+ }
+ }
+
+ vid_hdr = vh;
+ }
+
+ /* Read the data of the copy and check the CRC */
+
+ len = be32_to_cpu(vid_hdr->data_size);
+ buf = vmalloc(len);
+ if (!buf) {
+ err = -ENOMEM;
+ goto out_free_vidh;
+ }
+
+ err = ubi_io_read_data(ubi, buf, pnum, 0, len);
+ if (err && err != UBI_IO_BITFLIPS && !mtd_is_eccerr(err))
+ goto out_free_buf;
+
+ data_crc = be32_to_cpu(vid_hdr->data_crc);
+ crc = crc32(UBI_CRC32_INIT, buf, len);
+ if (crc != data_crc) {
+ dbg_bld("PEB %d CRC error: calculated %#08x, must be %#08x",
+ pnum, crc, data_crc);
+ corrupted = 1;
+ bitflips = 0;
+ second_is_newer = !second_is_newer;
+ } else {
+ dbg_bld("PEB %d CRC is OK", pnum);
+ bitflips = !!err;
+ }
+
+ vfree(buf);
+ ubi_free_vid_hdr(ubi, vh);
+
+ if (second_is_newer)
+ dbg_bld("second PEB %d is newer, copy_flag is set", pnum);
+ else
+ dbg_bld("first PEB %d is newer, copy_flag is set", pnum);
+
+ return second_is_newer | (bitflips << 1) | (corrupted << 2);
+
+out_free_buf:
+ vfree(buf);
+out_free_vidh:
+ ubi_free_vid_hdr(ubi, vh);
+ return err;
+}
+
+/**
+ * ubi_add_to_av - add used physical eraseblock to the attaching information.
+ * @ubi: UBI device description object
+ * @ai: attaching information
+ * @pnum: the physical eraseblock number
+ * @ec: erase counter
+ * @vid_hdr: the volume identifier header
+ * @bitflips: if bit-flips were detected when this physical eraseblock was read
+ *
+ * This function adds information about a used physical eraseblock to the
+ * 'used' tree of the corresponding volume. The function is rather complex
+ * because it has to handle cases when this is not the first physical
+ * eraseblock belonging to the same logical eraseblock, and the newer one has
+ * to be picked, while the older one has to be dropped. This function returns
+ * zero in case of success and a negative error code in case of failure.
+ */
+int ubi_add_to_av(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum,
+ int ec, const struct ubi_vid_hdr *vid_hdr, int bitflips)
+{
+ int err, vol_id, lnum;
+ unsigned long long sqnum;
+ struct ubi_ainf_volume *av;
+ struct ubi_ainf_peb *aeb;
+ struct rb_node **p, *parent = NULL;
+
+ vol_id = be32_to_cpu(vid_hdr->vol_id);
+ lnum = be32_to_cpu(vid_hdr->lnum);
+ sqnum = be64_to_cpu(vid_hdr->sqnum);
+
+ dbg_bld("PEB %d, LEB %d:%d, EC %d, sqnum %llu, bitflips %d",
+ pnum, vol_id, lnum, ec, sqnum, bitflips);
+
+ av = add_volume(ai, vol_id, pnum, vid_hdr);
+ if (IS_ERR(av))
+ return PTR_ERR(av);
+
+ if (ai->max_sqnum < sqnum)
+ ai->max_sqnum = sqnum;
+
+ /*
+ * Walk the RB-tree of logical eraseblocks of volume @vol_id to look
+ * if this is the first instance of this logical eraseblock or not.
+ */
+ p = &av->root.rb_node;
+ while (*p) {
+ int cmp_res;
+
+ parent = *p;
+ aeb = rb_entry(parent, struct ubi_ainf_peb, u.rb);
+ if (lnum != aeb->lnum) {
+ if (lnum < aeb->lnum)
+ p = &(*p)->rb_left;
+ else
+ p = &(*p)->rb_right;
+ continue;
+ }
+
+ /*
+ * There is already a physical eraseblock describing the same
+ * logical eraseblock present.
+ */
+
+ dbg_bld("this LEB already exists: PEB %d, sqnum %llu, EC %d",
+ aeb->pnum, aeb->sqnum, aeb->ec);
+
+ /*
+ * Make sure that the logical eraseblocks have different
+ * sequence numbers. Otherwise the image is bad.
+ *
+ * However, if the sequence number is zero, we assume it must
+ * be an ancient UBI image from the era when UBI did not have
+ * sequence numbers. We still can attach these images, unless
+ * there is a need to distinguish between old and new
+ * eraseblocks, in which case we'll refuse the image in
+ * 'compare_lebs()'. In other words, we attach old clean
+ * images, but refuse attaching old images with duplicated
+ * logical eraseblocks because there was an unclean reboot.
+ */
+ if (aeb->sqnum == sqnum && sqnum != 0) {
+ ubi_err("two LEBs with same sequence number %llu",
+ sqnum);
+ ubi_dump_aeb(aeb, 0);
+ ubi_dump_vid_hdr(vid_hdr);
+ return -EINVAL;
+ }
+
+ /*
+ * Now we have to drop the older one and preserve the newer
+ * one.
+ */
+ cmp_res = compare_lebs(ubi, aeb, pnum, vid_hdr);
+ if (cmp_res < 0)
+ return cmp_res;
+
+ if (cmp_res & 1) {
+ /*
+ * This logical eraseblock is newer than the one
+ * found earlier.
+ */
+ err = validate_vid_hdr(vid_hdr, av, pnum);
+ if (err)
+ return err;
+
+ err = add_to_list(ai, aeb->pnum, aeb->vol_id,
+ aeb->lnum, aeb->ec, cmp_res & 4,
+ &ai->erase);
+ if (err)
+ return err;
+
+ aeb->ec = ec;
+ aeb->pnum = pnum;
+ aeb->vol_id = vol_id;
+ aeb->lnum = lnum;
+ aeb->scrub = ((cmp_res & 2) || bitflips);
+ aeb->copy_flag = vid_hdr->copy_flag;
+ aeb->sqnum = sqnum;
+
+ if (av->highest_lnum == lnum)
+ av->last_data_size =
+ be32_to_cpu(vid_hdr->data_size);
+
+ return 0;
+ } else {
+ /*
+ * This logical eraseblock is older than the one found
+ * previously.
+ */
+ return add_to_list(ai, pnum, vol_id, lnum, ec,
+ cmp_res & 4, &ai->erase);
+ }
+ }
+
+ /*
+ * We've met this logical eraseblock for the first time, add it to the
+ * attaching information.
+ */
+
+ err = validate_vid_hdr(vid_hdr, av, pnum);
+ if (err)
+ return err;
+
+ aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);
+ if (!aeb)
+ return -ENOMEM;
+
+ aeb->ec = ec;
+ aeb->pnum = pnum;
+ aeb->vol_id = vol_id;
+ aeb->lnum = lnum;
+ aeb->scrub = bitflips;
+ aeb->copy_flag = vid_hdr->copy_flag;
+ aeb->sqnum = sqnum;
+
+ if (av->highest_lnum <= lnum) {
+ av->highest_lnum = lnum;
+ av->last_data_size = be32_to_cpu(vid_hdr->data_size);
+ }
+
+ av->leb_count += 1;
+ rb_link_node(&aeb->u.rb, parent, p);
+ rb_insert_color(&aeb->u.rb, &av->root);
+ return 0;
+}
+
+/**
+ * ubi_find_av - find volume in the attaching information.
+ * @ai: attaching information
+ * @vol_id: the requested volume ID
+ *
+ * This function returns a pointer to the volume description or %NULL if there
+ * are no data about this volume in the attaching information.
+ */
+struct ubi_ainf_volume *ubi_find_av(const struct ubi_attach_info *ai,
+ int vol_id)
+{
+ struct ubi_ainf_volume *av;
+ struct rb_node *p = ai->volumes.rb_node;
+
+ while (p) {
+ av = rb_entry(p, struct ubi_ainf_volume, rb);
+
+ if (vol_id == av->vol_id)
+ return av;
+
+ if (vol_id > av->vol_id)
+ p = p->rb_left;
+ else
+ p = p->rb_right;
+ }
+
+ return NULL;
+}
+
+/**
+ * ubi_remove_av - delete attaching information about a volume.
+ * @ai: attaching information
+ * @av: the volume attaching information to delete
+ */
+void ubi_remove_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av)
+{
+ struct rb_node *rb;
+ struct ubi_ainf_peb *aeb;
+
+ dbg_bld("remove attaching information about volume %d", av->vol_id);
+
+ while ((rb = rb_first(&av->root))) {
+ aeb = rb_entry(rb, struct ubi_ainf_peb, u.rb);
+ rb_erase(&aeb->u.rb, &av->root);
+ list_add_tail(&aeb->u.list, &ai->erase);
+ }
+
+ rb_erase(&av->rb, &ai->volumes);
+ kfree(av);
+ ai->vols_found -= 1;
+}
+
+/**
+ * early_erase_peb - erase a physical eraseblock.
+ * @ubi: UBI device description object
+ * @ai: attaching information
+ * @pnum: physical eraseblock number to erase;
+ * @ec: erase counter value to write (%UBI_UNKNOWN if it is unknown)
+ *
+ * This function erases physical eraseblock 'pnum', and writes the erase
+ * counter header to it. This function should only be used on UBI device
+ * initialization stages, when the EBA sub-system had not been yet initialized.
+ * This function returns zero in case of success and a negative error code in
+ * case of failure.
+ */
+static int early_erase_peb(struct ubi_device *ubi,
+ const struct ubi_attach_info *ai, int pnum, int ec)
+{
+ int err;
+ struct ubi_ec_hdr *ec_hdr;
+
+ if ((long long)ec >= UBI_MAX_ERASECOUNTER) {
+ /*
+ * Erase counter overflow. Upgrade UBI and use 64-bit
+ * erase counters internally.
+ */
+ ubi_err("erase counter overflow at PEB %d, EC %d", pnum, ec);
+ return -EINVAL;
+ }
+
+ ec_hdr = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);
+ if (!ec_hdr)
+ return -ENOMEM;
+
+ ec_hdr->ec = cpu_to_be64(ec);
+
+ err = ubi_io_sync_erase(ubi, pnum, 0);
+ if (err < 0)
+ goto out_free;
+
+ err = ubi_io_write_ec_hdr(ubi, pnum, ec_hdr);
+
+out_free:
+ kfree(ec_hdr);
+ return err;
+}
+
+/**
+ * ubi_early_get_peb - get a free physical eraseblock.
+ * @ubi: UBI device description object
+ * @ai: attaching information
+ *
+ * This function returns a free physical eraseblock. It is supposed to be
+ * called on the UBI initialization stages when the wear-leveling sub-system is
+ * not initialized yet. This function picks a physical eraseblocks from one of
+ * the lists, writes the EC header if it is needed, and removes it from the
+ * list.
+ *
+ * This function returns a pointer to the "aeb" of the found free PEB in case
+ * of success and an error code in case of failure.
+ */
+struct ubi_ainf_peb *ubi_early_get_peb(struct ubi_device *ubi,
+ struct ubi_attach_info *ai)
+{
+ int err = 0;
+ struct ubi_ainf_peb *aeb, *tmp_aeb;
+
+ if (!list_empty(&ai->free)) {
+ aeb = list_entry(ai->free.next, struct ubi_ainf_peb, u.list);
+ list_del(&aeb->u.list);
+ dbg_bld("return free PEB %d, EC %d", aeb->pnum, aeb->ec);
+ return aeb;
+ }
+
+ /*
+ * We try to erase the first physical eraseblock from the erase list
+ * and pick it if we succeed, or try to erase the next one if not. And
+ * so forth. We don't want to take care about bad eraseblocks here -
+ * they'll be handled later.
+ */
+ list_for_each_entry_safe(aeb, tmp_aeb, &ai->erase, u.list) {
+ if (aeb->ec == UBI_UNKNOWN)
+ aeb->ec = ai->mean_ec;
+
+ err = early_erase_peb(ubi, ai, aeb->pnum, aeb->ec+1);
+ if (err)
+ continue;
+
+ aeb->ec += 1;
+ list_del(&aeb->u.list);
+ dbg_bld("return PEB %d, EC %d", aeb->pnum, aeb->ec);
+ return aeb;
+ }
+
+ ubi_err("no free eraseblocks");
+ return ERR_PTR(-ENOSPC);
+}
+
+/**
+ * check_corruption - check the data area of PEB.
+ * @ubi: UBI device description object
+ * @vid_hrd: the (corrupted) VID header of this PEB
+ * @pnum: the physical eraseblock number to check
+ *
+ * This is a helper function which is used to distinguish between VID header
+ * corruptions caused by power cuts and other reasons. If the PEB contains only
+ * 0xFF bytes in the data area, the VID header is most probably corrupted
+ * because of a power cut (%0 is returned in this case). Otherwise, it was
+ * probably corrupted for some other reasons (%1 is returned in this case). A
+ * negative error code is returned if a read error occurred.
+ *
+ * If the corruption reason was a power cut, UBI can safely erase this PEB.
+ * Otherwise, it should preserve it to avoid possibly destroying important
+ * information.
+ */
+static int check_corruption(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr,
+ int pnum)
+{
+ int err;
+
+ mutex_lock(&ubi->buf_mutex);
+ memset(ubi->peb_buf, 0x00, ubi->leb_size);
+
+ err = ubi_io_read(ubi, ubi->peb_buf, pnum, ubi->leb_start,
+ ubi->leb_size);
+ if (err == UBI_IO_BITFLIPS || mtd_is_eccerr(err)) {
+ /*
+ * Bit-flips or integrity errors while reading the data area.
+ * It is difficult to say for sure what type of corruption is
+ * this, but presumably a power cut happened while this PEB was
+ * erased, so it became unstable and corrupted, and should be
+ * erased.
+ */
+ err = 0;
+ goto out_unlock;
+ }
+
+ if (err)
+ goto out_unlock;
+
+ if (ubi_check_pattern(ubi->peb_buf, 0xFF, ubi->leb_size))
+ goto out_unlock;
+
+ ubi_err("PEB %d contains corrupted VID header, and the data does not "
+ "contain all 0xFF, this may be a non-UBI PEB or a severe VID "
+ "header corruption which requires manual inspection", pnum);
+ ubi_dump_vid_hdr(vid_hdr);
+ dbg_msg("hexdump of PEB %d offset %d, length %d",
+ pnum, ubi->leb_start, ubi->leb_size);
+ ubi_dbg_print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
+ ubi->peb_buf, ubi->leb_size, 1);
+ err = 1;
+
+out_unlock:
+ mutex_unlock(&ubi->buf_mutex);
+ return err;
+}
+
+/**
+ * scan_peb - scan and process UBI headers of a PEB.
+ * @ubi: UBI device description object
+ * @ai: attaching information
+ * @pnum: the physical eraseblock number
+ *
+ * This function reads UBI headers of PEB @pnum, checks them, and adds
+ * information about this PEB to the corresponding list or RB-tree in the
+ * "attaching info" structure. Returns zero if the physical eraseblock was
+ * successfully handled and a negative error code in case of failure.
+ */
+static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
+ int pnum)
+{
+ long long uninitialized_var(ec);
+ int err, bitflips = 0, vol_id, ec_err = 0;
+
+ dbg_bld("scan PEB %d", pnum);
+
+ /* Skip bad physical eraseblocks */
+ err = ubi_io_is_bad(ubi, pnum);
+ if (err < 0)
+ return err;
+ else if (err) {
+ ai->bad_peb_count += 1;
+ return 0;
+ }
+
+ err = ubi_io_read_ec_hdr(ubi, pnum, ech, 0);
+ if (err < 0)
+ return err;
+ switch (err) {
+ case 0:
+ break;
+ case UBI_IO_BITFLIPS:
+ bitflips = 1;
+ break;
+ case UBI_IO_FF:
+ ai->empty_peb_count += 1;
+ return add_to_list(ai, pnum, UBI_UNKNOWN, UBI_UNKNOWN,
+ UBI_UNKNOWN, 0, &ai->erase);
+ case UBI_IO_FF_BITFLIPS:
+ ai->empty_peb_count += 1;
+ return add_to_list(ai, pnum, UBI_UNKNOWN, UBI_UNKNOWN,
+ UBI_UNKNOWN, 1, &ai->erase);
+ case UBI_IO_BAD_HDR_EBADMSG:
+ case UBI_IO_BAD_HDR:
+ /*
+ * We have to also look at the VID header, possibly it is not
+ * corrupted. Set %bitflips flag in order to make this PEB be
+ * moved and EC be re-created.
+ */
+ ec_err = err;
+ ec = UBI_UNKNOWN;
+ bitflips = 1;
+ break;
+ default:
+ ubi_err("'ubi_io_read_ec_hdr()' returned unknown code %d", err);
+ return -EINVAL;
+ }
+
+ if (!ec_err) {
+ int image_seq;
+
+ /* Make sure UBI version is OK */
+ if (ech->version != UBI_VERSION) {
+ ubi_err("this UBI version is %d, image version is %d",
+ UBI_VERSION, (int)ech->version);
+ return -EINVAL;
+ }
+
+ ec = be64_to_cpu(ech->ec);
+ if (ec > UBI_MAX_ERASECOUNTER) {
+ /*
+ * Erase counter overflow. The EC headers have 64 bits
+ * reserved, but we anyway make use of only 31 bit
+ * values, as this seems to be enough for any existing
+ * flash. Upgrade UBI and use 64-bit erase counters
+ * internally.
+ */
+ ubi_err("erase counter overflow, max is %d",
+ UBI_MAX_ERASECOUNTER);
+ ubi_dump_ec_hdr(ech);
+ return -EINVAL;
+ }
+
+ /*
+ * Make sure that all PEBs have the same image sequence number.
+ * This allows us to detect situations when users flash UBI
+ * images incorrectly, so that the flash has the new UBI image
+ * and leftovers from the old one. This feature was added
+ * relatively recently, and the sequence number was always
+ * zero, because old UBI implementations always set it to zero.
+ * For this reasons, we do not panic if some PEBs have zero
+ * sequence number, while other PEBs have non-zero sequence
+ * number.
+ */
+ image_seq = be32_to_cpu(ech->image_seq);
+ if (!ubi->image_seq && image_seq)
+ ubi->image_seq = image_seq;
+ if (ubi->image_seq && image_seq &&
+ ubi->image_seq != image_seq) {
+ ubi_err("bad image sequence number %d in PEB %d, "
+ "expected %d", image_seq, pnum, ubi->image_seq);
+ ubi_dump_ec_hdr(ech);
+ return -EINVAL;
+ }
+ }
+
+ /* OK, we've done with the EC header, let's look at the VID header */
+
+ err = ubi_io_read_vid_hdr(ubi, pnum, vidh, 0);
+ if (err < 0)
+ return err;
+ switch (err) {
+ case 0:
+ break;
+ case UBI_IO_BITFLIPS:
+ bitflips = 1;
+ break;
+ case UBI_IO_BAD_HDR_EBADMSG:
+ if (ec_err == UBI_IO_BAD_HDR_EBADMSG)
+ /*
+ * Both EC and VID headers are corrupted and were read
+ * with data integrity error, probably this is a bad
+ * PEB, bit it is not marked as bad yet. This may also
+ * be a result of power cut during erasure.
+ */
+ ai->maybe_bad_peb_count += 1;
+ case UBI_IO_BAD_HDR:
+ if (ec_err)
+ /*
+ * Both headers are corrupted. There is a possibility
+ * that this a valid UBI PEB which has corresponding
+ * LEB, but the headers are corrupted. However, it is
+ * impossible to distinguish it from a PEB which just
+ * contains garbage because of a power cut during erase
+ * operation. So we just schedule this PEB for erasure.
+ *
+ * Besides, in case of NOR flash, we deliberately
+ * corrupt both headers because NOR flash erasure is
+ * slow and can start from the end.
+ */
+ err = 0;
+ else
+ /*
+ * The EC was OK, but the VID header is corrupted. We
+ * have to check what is in the data area.
+ */
+ err = check_corruption(ubi, vidh, pnum);
+
+ if (err < 0)
+ return err;
+ else if (!err)
+ /* This corruption is caused by a power cut */
+ err = add_to_list(ai, pnum, UBI_UNKNOWN,
+ UBI_UNKNOWN, ec, 1, &ai->erase);
+ else
+ /* This is an unexpected corruption */
+ err = add_corrupted(ai, pnum, ec);
+ if (err)
+ return err;
+ goto adjust_mean_ec;
+ case UBI_IO_FF_BITFLIPS:
+ err = add_to_list(ai, pnum, UBI_UNKNOWN, UBI_UNKNOWN,
+ ec, 1, &ai->erase);
+ if (err)
+ return err;
+ goto adjust_mean_ec;
+ case UBI_IO_FF:
+ if (ec_err)
+ err = add_to_list(ai, pnum, UBI_UNKNOWN,
+ UBI_UNKNOWN, ec, 1, &ai->erase);
+ else
+ err = add_to_list(ai, pnum, UBI_UNKNOWN,
+ UBI_UNKNOWN, ec, 0, &ai->free);
+ if (err)
+ return err;
+ goto adjust_mean_ec;
+ default:
+ ubi_err("'ubi_io_read_vid_hdr()' returned unknown code %d",
+ err);
+ return -EINVAL;
+ }
+
+ vol_id = be32_to_cpu(vidh->vol_id);
+ if (vol_id > UBI_MAX_VOLUMES && vol_id != UBI_LAYOUT_VOLUME_ID) {
+ int lnum = be32_to_cpu(vidh->lnum);
+
+ /* Unsupported internal volume */
+ switch (vidh->compat) {
+ case UBI_COMPAT_DELETE:
+ ubi_msg("\"delete\" compatible internal volume %d:%d"
+ " found, will remove it", vol_id, lnum);
+ err = add_to_list(ai, pnum, vol_id, lnum,
+ ec, 1, &ai->erase);
+ if (err)
+ return err;
+ return 0;
+
+ case UBI_COMPAT_RO:
+ ubi_msg("read-only compatible internal volume %d:%d"
+ " found, switch to read-only mode",
+ vol_id, lnum);
+ ubi->ro_mode = 1;
+ break;
+
+ case UBI_COMPAT_PRESERVE:
+ ubi_msg("\"preserve\" compatible internal volume %d:%d"
+ " found", vol_id, lnum);
+ err = add_to_list(ai, pnum, vol_id, lnum,
+ ec, 0, &ai->alien);
+ if (err)
+ return err;
+ return 0;
+
+ case UBI_COMPAT_REJECT:
+ ubi_err("incompatible internal volume %d:%d found",
+ vol_id, lnum);
+ return -EINVAL;
+ }
+ }
+
+ if (ec_err)
+ ubi_warn("valid VID header but corrupted EC header at PEB %d",
+ pnum);
+ err = ubi_add_to_av(ubi, ai, pnum, ec, vidh, bitflips);
+ if (err)
+ return err;
+
+adjust_mean_ec:
+ if (!ec_err) {
+ ai->ec_sum += ec;
+ ai->ec_count += 1;
+ if (ec > ai->max_ec)
+ ai->max_ec = ec;
+ if (ec < ai->min_ec)
+ ai->min_ec = ec;
+ }
+
+ return 0;
+}
+
+/**
+ * late_analysis - analyze the overall situation with PEB.
+ * @ubi: UBI device description object
+ * @ai: attaching information
+ *
+ * This is a helper function which takes a look what PEBs we have after we
+ * gather information about all of them ("ai" is compete). It decides whether
+ * the flash is empty and should be formatted of whether there are too many
+ * corrupted PEBs and we should not attach this MTD device. Returns zero if we
+ * should proceed with attaching the MTD device, and %-EINVAL if we should not.
+ */
+static int late_analysis(struct ubi_device *ubi, struct ubi_attach_info *ai)
+{
+ struct ubi_ainf_peb *aeb;
+ int max_corr, peb_count;
+
+ peb_count = ubi->peb_count - ai->bad_peb_count - ai->alien_peb_count;
+ max_corr = peb_count / 20 ?: 8;
+
+ /*
+ * Few corrupted PEBs is not a problem and may be just a result of
+ * unclean reboots. However, many of them may indicate some problems
+ * with the flash HW or driver.
+ */
+ if (ai->corr_peb_count) {
+ ubi_err("%d PEBs are corrupted and preserved",
+ ai->corr_peb_count);
+ printk(KERN_ERR "Corrupted PEBs are:");
+ list_for_each_entry(aeb, &ai->corr, u.list)
+ printk(KERN_CONT " %d", aeb->pnum);
+ printk(KERN_CONT "\n");
+
+ /*
+ * If too many PEBs are corrupted, we refuse attaching,
+ * otherwise, only print a warning.
+ */
+ if (ai->corr_peb_count >= max_corr) {
+ ubi_err("too many corrupted PEBs, refusing");
+ return -EINVAL;
+ }
+ }
+
+ if (ai->empty_peb_count + ai->maybe_bad_peb_count == peb_count) {
+ /*
+ * All PEBs are empty, or almost all - a couple PEBs look like
+ * they may be bad PEBs which were not marked as bad yet.
+ *
+ * This piece of code basically tries to distinguish between
+ * the following situations:
+ *
+ * 1. Flash is empty, but there are few bad PEBs, which are not
+ * marked as bad so far, and which were read with error. We
+ * want to go ahead and format this flash. While formatting,
+ * the faulty PEBs will probably be marked as bad.
+ *
+ * 2. Flash contains non-UBI data and we do not want to format
+ * it and destroy possibly important information.
+ */
+ if (ai->maybe_bad_peb_count <= 2) {
+ ai->is_empty = 1;
+ ubi_msg("empty MTD device detected");
+ get_random_bytes(&ubi->image_seq,
+ sizeof(ubi->image_seq));
+ } else {
+ ubi_err("MTD device is not UBI-formatted and possibly "
+ "contains non-UBI data - refusing it");
+ return -EINVAL;
+ }
+
+ }
+
+ return 0;
+}
+
+/**
+ * scan_all - scan entire MTD device.
+ * @ubi: UBI device description object
+ *
+ * This function does full scanning of an MTD device and returns complete
+ * information about it in form of a "struct ubi_attach_info" object. In case
+ * of failure, an error code is returned.
+ */
+static struct ubi_attach_info *scan_all(struct ubi_device *ubi)
+{
+ int err, pnum;
+ struct rb_node *rb1, *rb2;
+ struct ubi_ainf_volume *av;
+ struct ubi_ainf_peb *aeb;
+ struct ubi_attach_info *ai;
+
+ ai = kzalloc(sizeof(struct ubi_attach_info), GFP_KERNEL);
+ if (!ai)
+ return ERR_PTR(-ENOMEM);
+
+ INIT_LIST_HEAD(&ai->corr);
+ INIT_LIST_HEAD(&ai->free);
+ INIT_LIST_HEAD(&ai->erase);
+ INIT_LIST_HEAD(&ai->alien);
+ ai->volumes = RB_ROOT;
+
+ err = -ENOMEM;
+ ai->aeb_slab_cache = kmem_cache_create("ubi_aeb_slab_cache",
+ sizeof(struct ubi_ainf_peb),
+ 0, 0, NULL);
+ if (!ai->aeb_slab_cache)
+ goto out_ai;
+
+ ech = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);
+ if (!ech)
+ goto out_ai;
+
+ vidh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);
+ if (!vidh)
+ goto out_ech;
+
+ for (pnum = 0; pnum < ubi->peb_count; pnum++) {
+ cond_resched();
+
+ dbg_gen("process PEB %d", pnum);
+ err = scan_peb(ubi, ai, pnum);
+ if (err < 0)
+ goto out_vidh;
+ }
+
+ dbg_msg("scanning is finished");
+
+ /* Calculate mean erase counter */
+ if (ai->ec_count)
+ ai->mean_ec = div_u64(ai->ec_sum, ai->ec_count);
+
+ err = late_analysis(ubi, ai);
+ if (err)
+ goto out_vidh;
+
+ /*
+ * In case of unknown erase counter we use the mean erase counter
+ * value.
+ */
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb) {
+ ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb)
+ if (aeb->ec == UBI_UNKNOWN)
+ aeb->ec = ai->mean_ec;
+ }
+
+ list_for_each_entry(aeb, &ai->free, u.list) {
+ if (aeb->ec == UBI_UNKNOWN)
+ aeb->ec = ai->mean_ec;
+ }
+
+ list_for_each_entry(aeb, &ai->corr, u.list)
+ if (aeb->ec == UBI_UNKNOWN)
+ aeb->ec = ai->mean_ec;
+
+ list_for_each_entry(aeb, &ai->erase, u.list)
+ if (aeb->ec == UBI_UNKNOWN)
+ aeb->ec = ai->mean_ec;
+
+ err = self_check_ai(ubi, ai);
+ if (err)
+ goto out_vidh;
+
+ ubi_free_vid_hdr(ubi, vidh);
+ kfree(ech);
+
+ return ai;
+
+out_vidh:
+ ubi_free_vid_hdr(ubi, vidh);
+out_ech:
+ kfree(ech);
+out_ai:
+ ubi_destroy_ai(ai);
+ return ERR_PTR(err);
+}
+
+/**
+ * ubi_attach - attach an MTD device.
+ * @ubi: UBI device descriptor
+ *
+ * This function returns zero in case of success and a negative error code in
+ * case of failure.
+ */
+int ubi_attach(struct ubi_device *ubi)
+{
+ int err;
+ struct ubi_attach_info *ai;
+
+ ai = scan_all(ubi);
+ if (IS_ERR(ai))
+ return PTR_ERR(ai);
+
+ ubi->bad_peb_count = ai->bad_peb_count;
+ ubi->good_peb_count = ubi->peb_count - ubi->bad_peb_count;
+ ubi->corr_peb_count = ai->corr_peb_count;
+ ubi->max_ec = ai->max_ec;
+ ubi->mean_ec = ai->mean_ec;
+ ubi_msg("max. sequence number: %llu", ai->max_sqnum);
+
+ err = ubi_read_volume_table(ubi, ai);
+ if (err)
+ goto out_ai;
+
+ err = ubi_wl_init(ubi, ai);
+ if (err)
+ goto out_vtbl;
+
+ err = ubi_eba_init(ubi, ai);
+ if (err)
+ goto out_wl;
+
+ ubi_destroy_ai(ai);
+ return 0;
+
+out_wl:
+ ubi_wl_close(ubi);
+out_vtbl:
+ ubi_free_internal_volumes(ubi);
+ vfree(ubi->vtbl);
+out_ai:
+ ubi_destroy_ai(ai);
+ return err;
+}
+
+/**
+ * destroy_av - free volume attaching information.
+ * @av: volume attaching information
+ * @ai: attaching information
+ *
+ * This function destroys the volume attaching information.
+ */
+static void destroy_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av)
+{
+ struct ubi_ainf_peb *aeb;
+ struct rb_node *this = av->root.rb_node;
+
+ while (this) {
+ if (this->rb_left)
+ this = this->rb_left;
+ else if (this->rb_right)
+ this = this->rb_right;
+ else {
+ aeb = rb_entry(this, struct ubi_ainf_peb, u.rb);
+ this = rb_parent(this);
+ if (this) {
+ if (this->rb_left == &aeb->u.rb)
+ this->rb_left = NULL;
+ else
+ this->rb_right = NULL;
+ }
+
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
+ }
+ }
+ kfree(av);
+}
+
+/**
+ * ubi_destroy_ai - destroy attaching information.
+ * @ai: attaching information
+ */
+void ubi_destroy_ai(struct ubi_attach_info *ai)
+{
+ struct ubi_ainf_peb *aeb, *aeb_tmp;
+ struct ubi_ainf_volume *av;
+ struct rb_node *rb;
+
+ list_for_each_entry_safe(aeb, aeb_tmp, &ai->alien, u.list) {
+ list_del(&aeb->u.list);
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
+ }
+ list_for_each_entry_safe(aeb, aeb_tmp, &ai->erase, u.list) {
+ list_del(&aeb->u.list);
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
+ }
+ list_for_each_entry_safe(aeb, aeb_tmp, &ai->corr, u.list) {
+ list_del(&aeb->u.list);
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
+ }
+ list_for_each_entry_safe(aeb, aeb_tmp, &ai->free, u.list) {
+ list_del(&aeb->u.list);
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
+ }
+
+ /* Destroy the volume RB-tree */
+ rb = ai->volumes.rb_node;
+ while (rb) {
+ if (rb->rb_left)
+ rb = rb->rb_left;
+ else if (rb->rb_right)
+ rb = rb->rb_right;
+ else {
+ av = rb_entry(rb, struct ubi_ainf_volume, rb);
+
+ rb = rb_parent(rb);
+ if (rb) {
+ if (rb->rb_left == &av->rb)
+ rb->rb_left = NULL;
+ else
+ rb->rb_right = NULL;
+ }
+
+ destroy_av(ai, av);
+ }
+ }
+
+ if (ai->aeb_slab_cache)
+ kmem_cache_destroy(ai->aeb_slab_cache);
+
+ kfree(ai);
+}
+
+/**
+ * self_check_ai - check the attaching information.
+ * @ubi: UBI device description object
+ * @ai: attaching information
+ *
+ * This function returns zero if the attaching information is all right, and a
+ * negative error code if not or if an error occurred.
+ */
+static int self_check_ai(struct ubi_device *ubi, struct ubi_attach_info *ai)
+{
+ int pnum, err, vols_found = 0;
+ struct rb_node *rb1, *rb2;
+ struct ubi_ainf_volume *av;
+ struct ubi_ainf_peb *aeb, *last_aeb;
+ uint8_t *buf;
+
+ if (!ubi->dbg->chk_gen)
+ return 0;
+
+ /*
+ * At first, check that attaching information is OK.
+ */
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb) {
+ int leb_count = 0;
+
+ cond_resched();
+
+ vols_found += 1;
+
+ if (ai->is_empty) {
+ ubi_err("bad is_empty flag");
+ goto bad_av;
+ }
+
+ if (av->vol_id < 0 || av->highest_lnum < 0 ||
+ av->leb_count < 0 || av->vol_type < 0 || av->used_ebs < 0 ||
+ av->data_pad < 0 || av->last_data_size < 0) {
+ ubi_err("negative values");
+ goto bad_av;
+ }
+
+ if (av->vol_id >= UBI_MAX_VOLUMES &&
+ av->vol_id < UBI_INTERNAL_VOL_START) {
+ ubi_err("bad vol_id");
+ goto bad_av;
+ }
+
+ if (av->vol_id > ai->highest_vol_id) {
+ ubi_err("highest_vol_id is %d, but vol_id %d is there",
+ ai->highest_vol_id, av->vol_id);
+ goto out;
+ }
+
+ if (av->vol_type != UBI_DYNAMIC_VOLUME &&
+ av->vol_type != UBI_STATIC_VOLUME) {
+ ubi_err("bad vol_type");
+ goto bad_av;
+ }
+
+ if (av->data_pad > ubi->leb_size / 2) {
+ ubi_err("bad data_pad");
+ goto bad_av;
+ }
+
+ last_aeb = NULL;
+ ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb) {
+ cond_resched();
+
+ last_aeb = aeb;
+ leb_count += 1;
+
+ if (aeb->pnum < 0 || aeb->ec < 0) {
+ ubi_err("negative values");
+ goto bad_aeb;
+ }
+
+ if (aeb->ec < ai->min_ec) {
+ ubi_err("bad ai->min_ec (%d), %d found",
+ ai->min_ec, aeb->ec);
+ goto bad_aeb;
+ }
+
+ if (aeb->ec > ai->max_ec) {
+ ubi_err("bad ai->max_ec (%d), %d found",
+ ai->max_ec, aeb->ec);
+ goto bad_aeb;
+ }
+
+ if (aeb->pnum >= ubi->peb_count) {
+ ubi_err("too high PEB number %d, total PEBs %d",
+ aeb->pnum, ubi->peb_count);
+ goto bad_aeb;
+ }
+
+ if (av->vol_type == UBI_STATIC_VOLUME) {
+ if (aeb->lnum >= av->used_ebs) {
+ ubi_err("bad lnum or used_ebs");
+ goto bad_aeb;
+ }
+ } else {
+ if (av->used_ebs != 0) {
+ ubi_err("non-zero used_ebs");
+ goto bad_aeb;
+ }
+ }
+
+ if (aeb->lnum > av->highest_lnum) {
+ ubi_err("incorrect highest_lnum or lnum");
+ goto bad_aeb;
+ }
+ }
+
+ if (av->leb_count != leb_count) {
+ ubi_err("bad leb_count, %d objects in the tree",
+ leb_count);
+ goto bad_av;
+ }
+
+ if (!last_aeb)
+ continue;
+
+ aeb = last_aeb;
+
+ if (aeb->lnum != av->highest_lnum) {
+ ubi_err("bad highest_lnum");
+ goto bad_aeb;
+ }
+ }
+
+ if (vols_found != ai->vols_found) {
+ ubi_err("bad ai->vols_found %d, should be %d",
+ ai->vols_found, vols_found);
+ goto out;
+ }
+
+ /* Check that attaching information is correct */
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb) {
+ last_aeb = NULL;
+ ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb) {
+ int vol_type;
+
+ cond_resched();
+
+ last_aeb = aeb;
+
+ err = ubi_io_read_vid_hdr(ubi, aeb->pnum, vidh, 1);
+ if (err && err != UBI_IO_BITFLIPS) {
+ ubi_err("VID header is not OK (%d)", err);
+ if (err > 0)
+ err = -EIO;
+ return err;
+ }
+
+ vol_type = vidh->vol_type == UBI_VID_DYNAMIC ?
+ UBI_DYNAMIC_VOLUME : UBI_STATIC_VOLUME;
+ if (av->vol_type != vol_type) {
+ ubi_err("bad vol_type");
+ goto bad_vid_hdr;
+ }
+
+ if (aeb->sqnum != be64_to_cpu(vidh->sqnum)) {
+ ubi_err("bad sqnum %llu", aeb->sqnum);
+ goto bad_vid_hdr;
+ }
+
+ if (av->vol_id != be32_to_cpu(vidh->vol_id)) {
+ ubi_err("bad vol_id %d", av->vol_id);
+ goto bad_vid_hdr;
+ }
+
+ if (av->compat != vidh->compat) {
+ ubi_err("bad compat %d", vidh->compat);
+ goto bad_vid_hdr;
+ }
+
+ if (aeb->lnum != be32_to_cpu(vidh->lnum)) {
+ ubi_err("bad lnum %d", aeb->lnum);
+ goto bad_vid_hdr;
+ }
+
+ if (av->used_ebs != be32_to_cpu(vidh->used_ebs)) {
+ ubi_err("bad used_ebs %d", av->used_ebs);
+ goto bad_vid_hdr;
+ }
+
+ if (av->data_pad != be32_to_cpu(vidh->data_pad)) {
+ ubi_err("bad data_pad %d", av->data_pad);
+ goto bad_vid_hdr;
+ }
+ }
+
+ if (!last_aeb)
+ continue;
+
+ if (av->highest_lnum != be32_to_cpu(vidh->lnum)) {
+ ubi_err("bad highest_lnum %d", av->highest_lnum);
+ goto bad_vid_hdr;
+ }
+
+ if (av->last_data_size != be32_to_cpu(vidh->data_size)) {
+ ubi_err("bad last_data_size %d", av->last_data_size);
+ goto bad_vid_hdr;
+ }
+ }
+
+ /*
+ * Make sure that all the physical eraseblocks are in one of the lists
+ * or trees.
+ */
+ buf = kzalloc(ubi->peb_count, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ for (pnum = 0; pnum < ubi->peb_count; pnum++) {
+ err = ubi_io_is_bad(ubi, pnum);
+ if (err < 0) {
+ kfree(buf);
+ return err;
+ } else if (err)
+ buf[pnum] = 1;
+ }
+
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb)
+ ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb)
+ buf[aeb->pnum] = 1;
+
+ list_for_each_entry(aeb, &ai->free, u.list)
+ buf[aeb->pnum] = 1;
+
+ list_for_each_entry(aeb, &ai->corr, u.list)
+ buf[aeb->pnum] = 1;
+
+ list_for_each_entry(aeb, &ai->erase, u.list)
+ buf[aeb->pnum] = 1;
+
+ list_for_each_entry(aeb, &ai->alien, u.list)
+ buf[aeb->pnum] = 1;
+
+ err = 0;
+ for (pnum = 0; pnum < ubi->peb_count; pnum++)
+ if (!buf[pnum]) {
+ ubi_err("PEB %d is not referred", pnum);
+ err = 1;
+ }
+
+ kfree(buf);
+ if (err)
+ goto out;
+ return 0;
+
+bad_aeb:
+ ubi_err("bad attaching information about LEB %d", aeb->lnum);
+ ubi_dump_aeb(aeb, 0);
+ ubi_dump_av(av);
+ goto out;
+
+bad_av:
+ ubi_err("bad attaching information about volume %d", av->vol_id);
+ ubi_dump_av(av);
+ goto out;
+
+bad_vid_hdr:
+ ubi_err("bad attaching information about volume %d", av->vol_id);
+ ubi_dump_av(av);
+ ubi_dump_vid_hdr(vidh);
+
+out:
+ dump_stack();
+ return -EINVAL;
+}
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 0fde9fc..2c5ed5c 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -27,10 +27,6 @@
* module load parameters or the kernel boot parameters. If MTD devices were
* specified, UBI does not attach any MTD device, but it is possible to do
* later using the "UBI control device".
- *
- * At the moment we only attach UBI devices by scanning, which will become a
- * bottleneck when flashes reach certain large size. Then one may improve UBI
- * and add other methods, although it does not seem to be easy to do.
*/
#include <linux/err.h>
@@ -554,10 +550,10 @@
}
/**
- * free_internal_volumes - free internal volumes.
+ * ubi_free_internal_volumes - free internal volumes.
* @ubi: UBI device description object
*/
-static void free_internal_volumes(struct ubi_device *ubi)
+void ubi_free_internal_volumes(struct ubi_device *ubi)
{
int i;
@@ -569,59 +565,6 @@
}
/**
- * attach_by_scanning - attach an MTD device using scanning method.
- * @ubi: UBI device descriptor
- *
- * This function returns zero in case of success and a negative error code in
- * case of failure.
- *
- * Note, currently this is the only method to attach UBI devices. Hopefully in
- * the future we'll have more scalable attaching methods and avoid full media
- * scanning. But even in this case scanning will be needed as a fall-back
- * attaching method if there are some on-flash table corruptions.
- */
-static int attach_by_scanning(struct ubi_device *ubi)
-{
- int err;
- struct ubi_scan_info *si;
-
- si = ubi_scan(ubi);
- if (IS_ERR(si))
- return PTR_ERR(si);
-
- ubi->bad_peb_count = si->bad_peb_count;
- ubi->good_peb_count = ubi->peb_count - ubi->bad_peb_count;
- ubi->corr_peb_count = si->corr_peb_count;
- ubi->max_ec = si->max_ec;
- ubi->mean_ec = si->mean_ec;
- ubi_msg("max. sequence number: %llu", si->max_sqnum);
-
- err = ubi_read_volume_table(ubi, si);
- if (err)
- goto out_si;
-
- err = ubi_wl_init_scan(ubi, si);
- if (err)
- goto out_vtbl;
-
- err = ubi_eba_init_scan(ubi, si);
- if (err)
- goto out_wl;
-
- ubi_scan_destroy_si(si);
- return 0;
-
-out_wl:
- ubi_wl_close(ubi);
-out_vtbl:
- free_internal_volumes(ubi);
- vfree(ubi->vtbl);
-out_si:
- ubi_scan_destroy_si(si);
- return err;
-}
-
-/**
* io_init - initialize I/O sub-system for a given UBI device.
* @ubi: UBI device description object
*
@@ -790,11 +733,11 @@
ubi_msg("data offset: %d", ubi->leb_start);
/*
- * Note, ideally, we have to initialize ubi->bad_peb_count here. But
+ * Note, ideally, we have to initialize @ubi->bad_peb_count here. But
* unfortunately, MTD does not provide this information. We should loop
* over all physical eraseblocks and invoke mtd->block_is_bad() for
- * each physical eraseblock. So, we skip ubi->bad_peb_count
- * uninitialized and initialize it after scanning.
+ * each physical eraseblock. So, we leave @ubi->bad_peb_count
+ * uninitialized so far.
*/
return 0;
@@ -805,7 +748,7 @@
* @ubi: UBI device description object
* @vol_id: ID of the volume to re-size
*
- * This function re-sizes the volume marked by the @UBI_VTBL_AUTORESIZE_FLG in
+ * This function re-sizes the volume marked by the %UBI_VTBL_AUTORESIZE_FLG in
* the volume table to the largest possible size. See comments in ubi-header.h
* for more description of the flag. Returns zero in case of success and a
* negative error code in case of failure.
@@ -881,7 +824,7 @@
for (i = 0; i < UBI_MAX_DEVICES; i++) {
ubi = ubi_devices[i];
if (ubi && mtd->index == ubi->mtd->index) {
- dbg_err("mtd%d is already attached to ubi%d",
+ ubi_err("mtd%d is already attached to ubi%d",
mtd->index, i);
return -EEXIST;
}
@@ -907,7 +850,7 @@
if (!ubi_devices[ubi_num])
break;
if (ubi_num == UBI_MAX_DEVICES) {
- dbg_err("only %d UBI devices may be created",
+ ubi_err("only %d UBI devices may be created",
UBI_MAX_DEVICES);
return -ENFILE;
}
@@ -917,7 +860,7 @@
/* Make sure ubi_num is not busy */
if (ubi_devices[ubi_num]) {
- dbg_err("ubi%d already exists", ubi_num);
+ ubi_err("ubi%d already exists", ubi_num);
return -EEXIST;
}
}
@@ -937,7 +880,7 @@
spin_lock_init(&ubi->volumes_lock);
ubi_msg("attaching mtd%d to ubi%d", mtd->index, ubi_num);
- dbg_msg("sizeof(struct ubi_scan_leb) %zu", sizeof(struct ubi_scan_leb));
+ dbg_msg("sizeof(struct ubi_ainf_peb) %zu", sizeof(struct ubi_ainf_peb));
dbg_msg("sizeof(struct ubi_wl_entry) %zu", sizeof(struct ubi_wl_entry));
err = io_init(ubi);
@@ -953,9 +896,9 @@
if (err)
goto out_free;
- err = attach_by_scanning(ubi);
+ err = ubi_attach(ubi);
if (err) {
- dbg_err("failed to attach by scanning, error %d", err);
+ ubi_err("failed to attach mtd%d, error %d", mtd->index, err);
goto out_debugging;
}
@@ -1020,7 +963,7 @@
uif_close(ubi);
out_detach:
ubi_wl_close(ubi);
- free_internal_volumes(ubi);
+ ubi_free_internal_volumes(ubi);
vfree(ubi->vtbl);
out_debugging:
ubi_debugging_exit_dev(ubi);
@@ -1092,7 +1035,7 @@
ubi_debugfs_exit_dev(ubi);
uif_close(ubi);
ubi_wl_close(ubi);
- free_internal_volumes(ubi);
+ ubi_free_internal_volumes(ubi);
vfree(ubi->vtbl);
put_mtd_device(ubi->mtd);
ubi_debugging_exit_dev(ubi);
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index ad76592..acec85d 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -63,7 +63,7 @@
users = vol->readers + vol->writers + vol->exclusive;
ubi_assert(users > 0);
if (users > 1) {
- dbg_err("%d users for volume %d", users, vol->vol_id);
+ ubi_err("%d users for volume %d", users, vol->vol_id);
err = -EBUSY;
} else {
vol->readers = vol->writers = 0;
@@ -159,7 +159,7 @@
if (vol->updating) {
/* Update is in progress, seeking is prohibited */
- dbg_err("updating");
+ ubi_err("updating");
return -EBUSY;
}
@@ -178,7 +178,7 @@
}
if (new_offset < 0 || new_offset > vol->used_bytes) {
- dbg_err("bad seek %lld", new_offset);
+ ubi_err("bad seek %lld", new_offset);
return -EINVAL;
}
@@ -216,11 +216,11 @@
count, *offp, vol->vol_id);
if (vol->updating) {
- dbg_err("updating");
+ ubi_err("updating");
return -EBUSY;
}
if (vol->upd_marker) {
- dbg_err("damaged volume, update marker is set");
+ ubi_err("damaged volume, update marker is set");
return -EBADF;
}
if (*offp == vol->used_bytes || count == 0)
@@ -300,7 +300,7 @@
lnum = div_u64_rem(*offp, vol->usable_leb_size, &off);
if (off & (ubi->min_io_size - 1)) {
- dbg_err("unaligned position");
+ ubi_err("unaligned position");
return -EINVAL;
}
@@ -309,7 +309,7 @@
/* We can write only in fractions of the minimum I/O unit */
if (count & (ubi->min_io_size - 1)) {
- dbg_err("unaligned write length");
+ ubi_err("unaligned write length");
return -EINVAL;
}
@@ -334,8 +334,7 @@
break;
}
- err = ubi_eba_write_leb(ubi, vol, lnum, tbuf, off, len,
- UBI_UNKNOWN);
+ err = ubi_eba_write_leb(ubi, vol, lnum, tbuf, off, len);
if (err)
break;
@@ -477,9 +476,6 @@
if (req.lnum < 0 || req.lnum >= vol->reserved_pebs ||
req.bytes < 0 || req.lnum >= vol->usable_leb_size)
break;
- if (req.dtype != UBI_LONGTERM && req.dtype != UBI_SHORTTERM &&
- req.dtype != UBI_UNKNOWN)
- break;
err = get_exclusive(desc);
if (err < 0)
@@ -518,7 +514,7 @@
if (err)
break;
- err = ubi_wl_flush(ubi);
+ err = ubi_wl_flush(ubi, UBI_ALL, UBI_ALL);
break;
}
@@ -532,7 +528,7 @@
err = -EFAULT;
break;
}
- err = ubi_leb_map(desc, req.lnum, req.dtype);
+ err = ubi_leb_map(desc, req.lnum);
break;
}
@@ -647,8 +643,8 @@
return 0;
bad:
- dbg_err("bad volume creation request");
- ubi_dbg_dump_mkvol_req(req);
+ ubi_err("bad volume creation request");
+ ubi_dump_mkvol_req(req);
return err;
}
@@ -713,12 +709,12 @@
for (i = 0; i < req->count - 1; i++) {
for (n = i + 1; n < req->count; n++) {
if (req->ents[i].vol_id == req->ents[n].vol_id) {
- dbg_err("duplicated volume id %d",
+ ubi_err("duplicated volume id %d",
req->ents[i].vol_id);
return -EINVAL;
}
if (!strcmp(req->ents[i].name, req->ents[n].name)) {
- dbg_err("duplicated volume name \"%s\"",
+ ubi_err("duplicated volume name \"%s\"",
req->ents[i].name);
return -EINVAL;
}
@@ -741,7 +737,7 @@
re->desc = ubi_open_volume(ubi->ubi_num, vol_id, UBI_EXCLUSIVE);
if (IS_ERR(re->desc)) {
err = PTR_ERR(re->desc);
- dbg_err("cannot open volume %d, error %d", vol_id, err);
+ ubi_err("cannot open volume %d, error %d", vol_id, err);
kfree(re);
goto out_free;
}
@@ -800,7 +796,7 @@
continue;
/* The volume exists but busy, or an error occurred */
- dbg_err("cannot open volume \"%s\", error %d",
+ ubi_err("cannot open volume \"%s\", error %d",
re->new_name, err);
goto out_free;
}
diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c
index 61af9bb..9f957c2 100644
--- a/drivers/mtd/ubi/debug.c
+++ b/drivers/mtd/ubi/debug.c
@@ -18,24 +18,49 @@
* Author: Artem Bityutskiy (Битюцкий Артём)
*/
-/*
- * Here we keep all the UBI debugging stuff which should normally be disabled
- * and compiled-out, but it is extremely helpful when hunting bugs or doing big
- * changes.
- */
-
-#ifdef CONFIG_MTD_UBI_DEBUG
-
#include "ubi.h"
#include <linux/debugfs.h>
#include <linux/uaccess.h>
#include <linux/module.h>
+
/**
- * ubi_dbg_dump_ec_hdr - dump an erase counter header.
+ * ubi_dump_flash - dump a region of flash.
+ * @ubi: UBI device description object
+ * @pnum: the physical eraseblock number to dump
+ * @offset: the starting offset within the physical eraseblock to dump
+ * @len: the length of the region to dump
+ */
+void ubi_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len)
+{
+ int err;
+ size_t read;
+ void *buf;
+ loff_t addr = (loff_t)pnum * ubi->peb_size + offset;
+
+ buf = vmalloc(len);
+ if (!buf)
+ return;
+ err = mtd_read(ubi->mtd, addr, len, &read, buf);
+ if (err && err != -EUCLEAN) {
+ ubi_err("error %d while reading %d bytes from PEB %d:%d, "
+ "read %zd bytes", err, len, pnum, offset, read);
+ goto out;
+ }
+
+ ubi_msg("dumping %d bytes of data from PEB %d, offset %d",
+ len, pnum, offset);
+ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1);
+out:
+ vfree(buf);
+ return;
+}
+
+/**
+ * ubi_dump_ec_hdr - dump an erase counter header.
* @ec_hdr: the erase counter header to dump
*/
-void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr)
+void ubi_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr)
{
printk(KERN_DEBUG "Erase counter header dump:\n");
printk(KERN_DEBUG "\tmagic %#08x\n",
@@ -57,10 +82,10 @@
}
/**
- * ubi_dbg_dump_vid_hdr - dump a volume identifier header.
+ * ubi_dump_vid_hdr - dump a volume identifier header.
* @vid_hdr: the volume identifier header to dump
*/
-void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr)
+void ubi_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr)
{
printk(KERN_DEBUG "Volume identifier header dump:\n");
printk(KERN_DEBUG "\tmagic %08x\n", be32_to_cpu(vid_hdr->magic));
@@ -82,10 +107,10 @@
}
/**
- * ubi_dbg_dump_vol_info- dump volume information.
+ * ubi_dump_vol_info - dump volume information.
* @vol: UBI volume description object
*/
-void ubi_dbg_dump_vol_info(const struct ubi_volume *vol)
+void ubi_dump_vol_info(const struct ubi_volume *vol)
{
printk(KERN_DEBUG "Volume information dump:\n");
printk(KERN_DEBUG "\tvol_id %d\n", vol->vol_id);
@@ -112,11 +137,11 @@
}
/**
- * ubi_dbg_dump_vtbl_record - dump a &struct ubi_vtbl_record object.
+ * ubi_dump_vtbl_record - dump a &struct ubi_vtbl_record object.
* @r: the object to dump
* @idx: volume table index
*/
-void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx)
+void ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx)
{
int name_len = be16_to_cpu(r->name_len);
@@ -146,44 +171,44 @@
}
/**
- * ubi_dbg_dump_sv - dump a &struct ubi_scan_volume object.
- * @sv: the object to dump
+ * ubi_dump_av - dump a &struct ubi_ainf_volume object.
+ * @av: the object to dump
*/
-void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv)
+void ubi_dump_av(const struct ubi_ainf_volume *av)
{
- printk(KERN_DEBUG "Volume scanning information dump:\n");
- printk(KERN_DEBUG "\tvol_id %d\n", sv->vol_id);
- printk(KERN_DEBUG "\thighest_lnum %d\n", sv->highest_lnum);
- printk(KERN_DEBUG "\tleb_count %d\n", sv->leb_count);
- printk(KERN_DEBUG "\tcompat %d\n", sv->compat);
- printk(KERN_DEBUG "\tvol_type %d\n", sv->vol_type);
- printk(KERN_DEBUG "\tused_ebs %d\n", sv->used_ebs);
- printk(KERN_DEBUG "\tlast_data_size %d\n", sv->last_data_size);
- printk(KERN_DEBUG "\tdata_pad %d\n", sv->data_pad);
+ printk(KERN_DEBUG "Volume attaching information dump:\n");
+ printk(KERN_DEBUG "\tvol_id %d\n", av->vol_id);
+ printk(KERN_DEBUG "\thighest_lnum %d\n", av->highest_lnum);
+ printk(KERN_DEBUG "\tleb_count %d\n", av->leb_count);
+ printk(KERN_DEBUG "\tcompat %d\n", av->compat);
+ printk(KERN_DEBUG "\tvol_type %d\n", av->vol_type);
+ printk(KERN_DEBUG "\tused_ebs %d\n", av->used_ebs);
+ printk(KERN_DEBUG "\tlast_data_size %d\n", av->last_data_size);
+ printk(KERN_DEBUG "\tdata_pad %d\n", av->data_pad);
}
/**
- * ubi_dbg_dump_seb - dump a &struct ubi_scan_leb object.
- * @seb: the object to dump
+ * ubi_dump_aeb - dump a &struct ubi_ainf_peb object.
+ * @aeb: the object to dump
* @type: object type: 0 - not corrupted, 1 - corrupted
*/
-void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type)
+void ubi_dump_aeb(const struct ubi_ainf_peb *aeb, int type)
{
- printk(KERN_DEBUG "eraseblock scanning information dump:\n");
- printk(KERN_DEBUG "\tec %d\n", seb->ec);
- printk(KERN_DEBUG "\tpnum %d\n", seb->pnum);
+ printk(KERN_DEBUG "eraseblock attaching information dump:\n");
+ printk(KERN_DEBUG "\tec %d\n", aeb->ec);
+ printk(KERN_DEBUG "\tpnum %d\n", aeb->pnum);
if (type == 0) {
- printk(KERN_DEBUG "\tlnum %d\n", seb->lnum);
- printk(KERN_DEBUG "\tscrub %d\n", seb->scrub);
- printk(KERN_DEBUG "\tsqnum %llu\n", seb->sqnum);
+ printk(KERN_DEBUG "\tlnum %d\n", aeb->lnum);
+ printk(KERN_DEBUG "\tscrub %d\n", aeb->scrub);
+ printk(KERN_DEBUG "\tsqnum %llu\n", aeb->sqnum);
}
}
/**
- * ubi_dbg_dump_mkvol_req - dump a &struct ubi_mkvol_req object.
+ * ubi_dump_mkvol_req - dump a &struct ubi_mkvol_req object.
* @req: the object to dump
*/
-void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req)
+void ubi_dump_mkvol_req(const struct ubi_mkvol_req *req)
{
char nm[17];
@@ -200,38 +225,6 @@
}
/**
- * ubi_dbg_dump_flash - dump a region of flash.
- * @ubi: UBI device description object
- * @pnum: the physical eraseblock number to dump
- * @offset: the starting offset within the physical eraseblock to dump
- * @len: the length of the region to dump
- */
-void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len)
-{
- int err;
- size_t read;
- void *buf;
- loff_t addr = (loff_t)pnum * ubi->peb_size + offset;
-
- buf = vmalloc(len);
- if (!buf)
- return;
- err = mtd_read(ubi->mtd, addr, len, &read, buf);
- if (err && err != -EUCLEAN) {
- ubi_err("error %d while reading %d bytes from PEB %d:%d, "
- "read %zd bytes", err, len, pnum, offset, read);
- goto out;
- }
-
- dbg_msg("dumping %d bytes of data from PEB %d, offset %d",
- len, pnum, offset);
- print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1);
-out:
- vfree(buf);
- return;
-}
-
-/**
* ubi_debugging_init_dev - initialize debugging for an UBI device.
* @ubi: UBI device description object
*
@@ -479,5 +472,3 @@
{
debugfs_remove_recursive(ubi->dbg->dfs_dir);
}
-
-#endif /* CONFIG_MTD_UBI_DEBUG */
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
index ead2cd1..d5d2645 100644
--- a/drivers/mtd/ubi/debug.h
+++ b/drivers/mtd/ubi/debug.h
@@ -21,21 +21,20 @@
#ifndef __UBI_DEBUG_H__
#define __UBI_DEBUG_H__
-#ifdef CONFIG_MTD_UBI_DEBUG
+void ubi_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len);
+void ubi_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr);
+void ubi_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr);
+
#include <linux/random.h>
#define ubi_assert(expr) do { \
if (unlikely(!(expr))) { \
printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \
__func__, __LINE__, current->pid); \
- ubi_dbg_dump_stack(); \
+ dump_stack(); \
} \
} while (0)
-#define dbg_err(fmt, ...) ubi_err(fmt, ##__VA_ARGS__)
-
-#define ubi_dbg_dump_stack() dump_stack()
-
#define ubi_dbg_print_hex_dump(l, ps, pt, r, g, b, len, a) \
print_hex_dump(l, ps, pt, r, g, b, len, a)
@@ -58,17 +57,13 @@
/* Initialization and build messages */
#define dbg_bld(fmt, ...) ubi_dbg_msg("bld", fmt, ##__VA_ARGS__)
-void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr);
-void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr);
-void ubi_dbg_dump_vol_info(const struct ubi_volume *vol);
-void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx);
-void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv);
-void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type);
-void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req);
-void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len);
-int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len);
-int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,
- int offset, int len);
+void ubi_dump_vol_info(const struct ubi_volume *vol);
+void ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx);
+void ubi_dump_av(const struct ubi_ainf_volume *av);
+void ubi_dump_aeb(const struct ubi_ainf_peb *aeb, int type);
+void ubi_dump_mkvol_req(const struct ubi_mkvol_req *req);
+int ubi_self_check_all_ff(struct ubi_device *ubi, int pnum, int offset,
+ int len);
int ubi_debugging_init_dev(struct ubi_device *ubi);
void ubi_debugging_exit_dev(struct ubi_device *ubi);
int ubi_debugfs_init(void);
@@ -167,73 +162,4 @@
return 0;
}
-#else
-
-/* Use "if (0)" to make compiler check arguments even if debugging is off */
-#define ubi_assert(expr) do { \
- if (0) { \
- printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \
- __func__, __LINE__, current->pid); \
- } \
-} while (0)
-
-#define dbg_err(fmt, ...) do { \
- if (0) \
- ubi_err(fmt, ##__VA_ARGS__); \
-} while (0)
-
-#define ubi_dbg_msg(fmt, ...) do { \
- if (0) \
- printk(KERN_DEBUG fmt "\n", ##__VA_ARGS__); \
-} while (0)
-
-#define dbg_msg(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_gen(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_eba(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_wl(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_io(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_bld(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-
-static inline void ubi_dbg_dump_stack(void) { return; }
-static inline void
-ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr) { return; }
-static inline void
-ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr) { return; }
-static inline void
-ubi_dbg_dump_vol_info(const struct ubi_volume *vol) { return; }
-static inline void
-ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx) { return; }
-static inline void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv) { return; }
-static inline void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb,
- int type) { return; }
-static inline void
-ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req) { return; }
-static inline void ubi_dbg_dump_flash(struct ubi_device *ubi,
- int pnum, int offset, int len) { return; }
-static inline void
-ubi_dbg_print_hex_dump(const char *l, const char *ps, int pt, int r,
- int g, const void *b, size_t len, bool a) { return; }
-static inline int ubi_dbg_check_all_ff(struct ubi_device *ubi,
- int pnum, int offset,
- int len) { return 0; }
-static inline int ubi_dbg_check_write(struct ubi_device *ubi,
- const void *buf, int pnum,
- int offset, int len) { return 0; }
-
-static inline int ubi_debugging_init_dev(struct ubi_device *ubi) { return 0; }
-static inline void ubi_debugging_exit_dev(struct ubi_device *ubi) { return; }
-static inline int ubi_debugfs_init(void) { return 0; }
-static inline void ubi_debugfs_exit(void) { return; }
-static inline int ubi_debugfs_init_dev(struct ubi_device *ubi) { return 0; }
-static inline void ubi_debugfs_exit_dev(struct ubi_device *ubi) { return; }
-
-static inline int
-ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi) { return 0; }
-static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi) { return 0; }
-static inline int
-ubi_dbg_is_write_failure(const struct ubi_device *ubi) { return 0; }
-static inline int
-ubi_dbg_is_erase_failure(const struct ubi_device *ubi) { return 0; }
-
-#endif /* !CONFIG_MTD_UBI_DEBUG */
#endif /* !__UBI_DEBUG_H__ */
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index 2455d62..b703ac7 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -341,7 +341,7 @@
dbg_eba("erase LEB %d:%d, PEB %d", vol_id, lnum, pnum);
vol->eba_tbl[lnum] = UBI_LEB_UNMAPPED;
- err = ubi_wl_put_peb(ubi, pnum, 0);
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 0);
out_unlock:
leb_write_unlock(ubi, vol_id, lnum);
@@ -507,7 +507,7 @@
return -ENOMEM;
retry:
- new_pnum = ubi_wl_get_peb(ubi, UBI_UNKNOWN);
+ new_pnum = ubi_wl_get_peb(ubi);
if (new_pnum < 0) {
ubi_free_vid_hdr(ubi, vid_hdr);
return new_pnum;
@@ -550,7 +550,7 @@
ubi_free_vid_hdr(ubi, vid_hdr);
vol->eba_tbl[lnum] = new_pnum;
- ubi_wl_put_peb(ubi, pnum, 1);
+ ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
ubi_msg("data was successfully recovered");
return 0;
@@ -558,7 +558,7 @@
out_unlock:
mutex_unlock(&ubi->buf_mutex);
out_put:
- ubi_wl_put_peb(ubi, new_pnum, 1);
+ ubi_wl_put_peb(ubi, vol_id, lnum, new_pnum, 1);
ubi_free_vid_hdr(ubi, vid_hdr);
return err;
@@ -568,7 +568,7 @@
* get another one.
*/
ubi_warn("failed to write to PEB %d", new_pnum);
- ubi_wl_put_peb(ubi, new_pnum, 1);
+ ubi_wl_put_peb(ubi, vol_id, lnum, new_pnum, 1);
if (++tries > UBI_IO_RETRIES) {
ubi_free_vid_hdr(ubi, vid_hdr);
return err;
@@ -585,7 +585,6 @@
* @buf: the data to write
* @offset: offset within the logical eraseblock where to write
* @len: how many bytes to write
- * @dtype: data type
*
* This function writes data to logical eraseblock @lnum of a dynamic volume
* @vol. Returns zero in case of success and a negative error code in case
@@ -593,7 +592,7 @@
* written to the flash media, but may be some garbage.
*/
int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
- const void *buf, int offset, int len, int dtype)
+ const void *buf, int offset, int len)
{
int err, pnum, tries = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
@@ -641,7 +640,7 @@
vid_hdr->data_pad = cpu_to_be32(vol->data_pad);
retry:
- pnum = ubi_wl_get_peb(ubi, dtype);
+ pnum = ubi_wl_get_peb(ubi);
if (pnum < 0) {
ubi_free_vid_hdr(ubi, vid_hdr);
leb_write_unlock(ubi, vol_id, lnum);
@@ -687,7 +686,7 @@
* eraseblock, so just put it and request a new one. We assume that if
* this physical eraseblock went bad, the erase code will handle that.
*/
- err = ubi_wl_put_peb(ubi, pnum, 1);
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
if (err || ++tries > UBI_IO_RETRIES) {
ubi_ro_mode(ubi);
leb_write_unlock(ubi, vol_id, lnum);
@@ -707,7 +706,6 @@
* @lnum: logical eraseblock number
* @buf: data to write
* @len: how many bytes to write
- * @dtype: data type
* @used_ebs: how many logical eraseblocks will this volume contain
*
* This function writes data to logical eraseblock @lnum of static volume
@@ -724,8 +722,7 @@
* code in case of failure.
*/
int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol,
- int lnum, const void *buf, int len, int dtype,
- int used_ebs)
+ int lnum, const void *buf, int len, int used_ebs)
{
int err, pnum, tries = 0, data_size = len, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
@@ -763,7 +760,7 @@
vid_hdr->data_crc = cpu_to_be32(crc);
retry:
- pnum = ubi_wl_get_peb(ubi, dtype);
+ pnum = ubi_wl_get_peb(ubi);
if (pnum < 0) {
ubi_free_vid_hdr(ubi, vid_hdr);
leb_write_unlock(ubi, vol_id, lnum);
@@ -807,7 +804,7 @@
return err;
}
- err = ubi_wl_put_peb(ubi, pnum, 1);
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
if (err || ++tries > UBI_IO_RETRIES) {
ubi_ro_mode(ubi);
leb_write_unlock(ubi, vol_id, lnum);
@@ -827,7 +824,6 @@
* @lnum: logical eraseblock number
* @buf: data to write
* @len: how many bytes to write
- * @dtype: data type
*
* This function changes the contents of a logical eraseblock atomically. @buf
* has to contain new logical eraseblock data, and @len - the length of the
@@ -839,7 +835,7 @@
* LEB change may be done at a time. This is ensured by @ubi->alc_mutex.
*/
int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
- int lnum, const void *buf, int len, int dtype)
+ int lnum, const void *buf, int len)
{
int err, pnum, tries = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
@@ -856,7 +852,7 @@
err = ubi_eba_unmap_leb(ubi, vol, lnum);
if (err)
return err;
- return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0, dtype);
+ return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0);
}
vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS);
@@ -881,7 +877,7 @@
vid_hdr->data_crc = cpu_to_be32(crc);
retry:
- pnum = ubi_wl_get_peb(ubi, dtype);
+ pnum = ubi_wl_get_peb(ubi);
if (pnum < 0) {
err = pnum;
goto out_leb_unlock;
@@ -905,7 +901,7 @@
}
if (vol->eba_tbl[lnum] >= 0) {
- err = ubi_wl_put_peb(ubi, vol->eba_tbl[lnum], 0);
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, vol->eba_tbl[lnum], 0);
if (err)
goto out_leb_unlock;
}
@@ -930,7 +926,7 @@
goto out_leb_unlock;
}
- err = ubi_wl_put_peb(ubi, pnum, 1);
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
if (err || ++tries > UBI_IO_RETRIES) {
ubi_ro_mode(ubi);
goto out_leb_unlock;
@@ -1171,7 +1167,7 @@
* print_rsvd_warning - warn about not having enough reserved PEBs.
* @ubi: UBI device description object
*
- * This is a helper function for 'ubi_eba_init_scan()' which is called when UBI
+ * This is a helper function for 'ubi_eba_init()' which is called when UBI
* cannot reserve enough PEBs for bad block handling. This function makes a
* decision whether we have to print a warning or not. The algorithm is as
* follows:
@@ -1186,13 +1182,13 @@
* reported by real users.
*/
static void print_rsvd_warning(struct ubi_device *ubi,
- struct ubi_scan_info *si)
+ struct ubi_attach_info *ai)
{
/*
* The 1 << 18 (256KiB) number is picked randomly, just a reasonably
* large number to distinguish between newly flashed and used images.
*/
- if (si->max_sqnum > (1 << 18)) {
+ if (ai->max_sqnum > (1 << 18)) {
int min = ubi->beb_rsvd_level / 10;
if (!min)
@@ -1209,19 +1205,19 @@
}
/**
- * ubi_eba_init_scan - initialize the EBA sub-system using scanning information.
+ * ubi_eba_init - initialize the EBA sub-system using attaching information.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* This function returns zero in case of success and a negative error code in
* case of failure.
*/
-int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si)
+int ubi_eba_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
{
int i, j, err, num_volumes;
- struct ubi_scan_volume *sv;
+ struct ubi_ainf_volume *av;
struct ubi_volume *vol;
- struct ubi_scan_leb *seb;
+ struct ubi_ainf_peb *aeb;
struct rb_node *rb;
dbg_eba("initialize EBA sub-system");
@@ -1230,7 +1226,7 @@
mutex_init(&ubi->alc_mutex);
ubi->ltree = RB_ROOT;
- ubi->global_sqnum = si->max_sqnum + 1;
+ ubi->global_sqnum = ai->max_sqnum + 1;
num_volumes = ubi->vtbl_slots + UBI_INT_VOL_COUNT;
for (i = 0; i < num_volumes; i++) {
@@ -1250,18 +1246,18 @@
for (j = 0; j < vol->reserved_pebs; j++)
vol->eba_tbl[j] = UBI_LEB_UNMAPPED;
- sv = ubi_scan_find_sv(si, idx2vol_id(ubi, i));
- if (!sv)
+ av = ubi_find_av(ai, idx2vol_id(ubi, i));
+ if (!av)
continue;
- ubi_rb_for_each_entry(rb, seb, &sv->root, u.rb) {
- if (seb->lnum >= vol->reserved_pebs)
+ ubi_rb_for_each_entry(rb, aeb, &av->root, u.rb) {
+ if (aeb->lnum >= vol->reserved_pebs)
/*
* This may happen in case of an unclean reboot
* during re-size.
*/
- ubi_scan_move_to_list(sv, seb, &si->erase);
- vol->eba_tbl[seb->lnum] = seb->pnum;
+ ubi_move_aeb_to_list(av, aeb, &ai->erase);
+ vol->eba_tbl[aeb->lnum] = aeb->pnum;
}
}
@@ -1283,7 +1279,7 @@
if (ubi->avail_pebs < ubi->beb_rsvd_level) {
/* No enough free physical eraseblocks */
ubi->beb_rsvd_pebs = ubi->avail_pebs;
- print_rsvd_warning(ubi, si);
+ print_rsvd_warning(ubi, ai);
} else
ubi->beb_rsvd_pebs = ubi->beb_rsvd_level;
diff --git a/drivers/mtd/ubi/gluebi.c b/drivers/mtd/ubi/gluebi.c
index 90b9882..4e44bee 100644
--- a/drivers/mtd/ubi/gluebi.c
+++ b/drivers/mtd/ubi/gluebi.c
@@ -227,7 +227,7 @@
if (to_write > total_written)
to_write = total_written;
- err = ubi_write(gluebi->desc, lnum, buf, offs, to_write);
+ err = ubi_leb_write(gluebi->desc, lnum, buf, offs, to_write);
if (err)
break;
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 43f1a00..a8d5237 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -91,21 +91,15 @@
#include <linux/slab.h>
#include "ubi.h"
-#ifdef CONFIG_MTD_UBI_DEBUG
-static int paranoid_check_not_bad(const struct ubi_device *ubi, int pnum);
-static int paranoid_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum);
-static int paranoid_check_ec_hdr(const struct ubi_device *ubi, int pnum,
- const struct ubi_ec_hdr *ec_hdr);
-static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum);
-static int paranoid_check_vid_hdr(const struct ubi_device *ubi, int pnum,
- const struct ubi_vid_hdr *vid_hdr);
-#else
-#define paranoid_check_not_bad(ubi, pnum) 0
-#define paranoid_check_peb_ec_hdr(ubi, pnum) 0
-#define paranoid_check_ec_hdr(ubi, pnum, ec_hdr) 0
-#define paranoid_check_peb_vid_hdr(ubi, pnum) 0
-#define paranoid_check_vid_hdr(ubi, pnum, vid_hdr) 0
-#endif
+static int self_check_not_bad(const struct ubi_device *ubi, int pnum);
+static int self_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum);
+static int self_check_ec_hdr(const struct ubi_device *ubi, int pnum,
+ const struct ubi_ec_hdr *ec_hdr);
+static int self_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum);
+static int self_check_vid_hdr(const struct ubi_device *ubi, int pnum,
+ const struct ubi_vid_hdr *vid_hdr);
+static int self_check_write(struct ubi_device *ubi, const void *buf, int pnum,
+ int offset, int len);
/**
* ubi_io_read - read data from a physical eraseblock.
@@ -142,7 +136,7 @@
ubi_assert(offset >= 0 && offset + len <= ubi->peb_size);
ubi_assert(len > 0);
- err = paranoid_check_not_bad(ubi, pnum);
+ err = self_check_not_bad(ubi, pnum);
if (err)
return err;
@@ -189,16 +183,16 @@
}
if (retries++ < UBI_IO_RETRIES) {
- dbg_io("error %d%s while reading %d bytes from PEB "
- "%d:%d, read only %zd bytes, retry",
- err, errstr, len, pnum, offset, read);
+ ubi_warn("error %d%s while reading %d bytes from PEB "
+ "%d:%d, read only %zd bytes, retry",
+ err, errstr, len, pnum, offset, read);
yield();
goto retry;
}
ubi_err("error %d%s while reading %d bytes from PEB %d:%d, "
"read %zd bytes", err, errstr, len, pnum, offset, read);
- ubi_dbg_dump_stack();
+ dump_stack();
/*
* The driver should never return -EBADMSG if it failed to read
@@ -257,14 +251,12 @@
return -EROFS;
}
- /* The below has to be compiled out if paranoid checks are disabled */
-
- err = paranoid_check_not_bad(ubi, pnum);
+ err = self_check_not_bad(ubi, pnum);
if (err)
return err;
/* The area we are writing to has to contain all 0xFF bytes */
- err = ubi_dbg_check_all_ff(ubi, pnum, offset, len);
+ err = ubi_self_check_all_ff(ubi, pnum, offset, len);
if (err)
return err;
@@ -273,18 +265,18 @@
* We write to the data area of the physical eraseblock. Make
* sure it has valid EC and VID headers.
*/
- err = paranoid_check_peb_ec_hdr(ubi, pnum);
+ err = self_check_peb_ec_hdr(ubi, pnum);
if (err)
return err;
- err = paranoid_check_peb_vid_hdr(ubi, pnum);
+ err = self_check_peb_vid_hdr(ubi, pnum);
if (err)
return err;
}
if (ubi_dbg_is_write_failure(ubi)) {
- dbg_err("cannot write %d bytes to PEB %d:%d "
+ ubi_err("cannot write %d bytes to PEB %d:%d "
"(emulated)", len, pnum, offset);
- ubi_dbg_dump_stack();
+ dump_stack();
return -EIO;
}
@@ -293,13 +285,13 @@
if (err) {
ubi_err("error %d while writing %d bytes to PEB %d:%d, written "
"%zd bytes", err, len, pnum, offset, written);
- ubi_dbg_dump_stack();
- ubi_dbg_dump_flash(ubi, pnum, offset, len);
+ dump_stack();
+ ubi_dump_flash(ubi, pnum, offset, len);
} else
ubi_assert(written == len);
if (!err) {
- err = ubi_dbg_check_write(ubi, buf, pnum, offset, len);
+ err = self_check_write(ubi, buf, pnum, offset, len);
if (err)
return err;
@@ -310,7 +302,7 @@
offset += len;
len = ubi->peb_size - offset;
if (len)
- err = ubi_dbg_check_all_ff(ubi, pnum, offset, len);
+ err = ubi_self_check_all_ff(ubi, pnum, offset, len);
}
return err;
@@ -364,13 +356,13 @@
err = mtd_erase(ubi->mtd, &ei);
if (err) {
if (retries++ < UBI_IO_RETRIES) {
- dbg_io("error %d while erasing PEB %d, retry",
- err, pnum);
+ ubi_warn("error %d while erasing PEB %d, retry",
+ err, pnum);
yield();
goto retry;
}
ubi_err("cannot erase PEB %d, error %d", pnum, err);
- ubi_dbg_dump_stack();
+ dump_stack();
return err;
}
@@ -383,21 +375,21 @@
if (ei.state == MTD_ERASE_FAILED) {
if (retries++ < UBI_IO_RETRIES) {
- dbg_io("error while erasing PEB %d, retry", pnum);
+ ubi_warn("error while erasing PEB %d, retry", pnum);
yield();
goto retry;
}
ubi_err("cannot erase PEB %d", pnum);
- ubi_dbg_dump_stack();
+ dump_stack();
return -EIO;
}
- err = ubi_dbg_check_all_ff(ubi, pnum, 0, ubi->peb_size);
+ err = ubi_self_check_all_ff(ubi, pnum, 0, ubi->peb_size);
if (err)
return err;
if (ubi_dbg_is_erase_failure(ubi)) {
- dbg_err("cannot erase PEB %d (emulated)", pnum);
+ ubi_err("cannot erase PEB %d (emulated)", pnum);
return -EIO;
}
@@ -521,8 +513,7 @@
* It is important to first invalidate the EC header, and then the VID
* header. Otherwise a power cut may lead to valid EC header and
* invalid VID header, in which case UBI will treat this PEB as
- * corrupted and will try to preserve it, and print scary warnings (see
- * the header comment in scan.c for more information).
+ * corrupted and will try to preserve it, and print scary warnings.
*/
addr = (loff_t)pnum * ubi->peb_size;
err = mtd_write(ubi->mtd, addr, 4, &written, (void *)&data);
@@ -563,7 +554,7 @@
*/
ubi_err("cannot invalidate PEB %d, write returned %d read returned %d",
pnum, err, err1);
- ubi_dbg_dump_flash(ubi, pnum, 0, ubi->peb_size);
+ ubi_dump_flash(ubi, pnum, 0, ubi->peb_size);
return -EIO;
}
@@ -589,7 +580,7 @@
ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
- err = paranoid_check_not_bad(ubi, pnum);
+ err = self_check_not_bad(ubi, pnum);
if (err != 0)
return err;
@@ -721,8 +712,8 @@
bad:
ubi_err("bad EC header");
- ubi_dbg_dump_ec_hdr(ec_hdr);
- ubi_dbg_dump_stack();
+ ubi_dump_ec_hdr(ec_hdr);
+ dump_stack();
return 1;
}
@@ -803,7 +794,7 @@
if (verbose) {
ubi_warn("bad magic number at PEB %d: %08x instead of "
"%08x", pnum, magic, UBI_EC_HDR_MAGIC);
- ubi_dbg_dump_ec_hdr(ec_hdr);
+ ubi_dump_ec_hdr(ec_hdr);
}
dbg_bld("bad magic number at PEB %d: %08x instead of "
"%08x", pnum, magic, UBI_EC_HDR_MAGIC);
@@ -817,7 +808,7 @@
if (verbose) {
ubi_warn("bad EC header CRC at PEB %d, calculated "
"%#08x, read %#08x", pnum, crc, hdr_crc);
- ubi_dbg_dump_ec_hdr(ec_hdr);
+ ubi_dump_ec_hdr(ec_hdr);
}
dbg_bld("bad EC header CRC at PEB %d, calculated "
"%#08x, read %#08x", pnum, crc, hdr_crc);
@@ -874,7 +865,7 @@
crc = crc32(UBI_CRC32_INIT, ec_hdr, UBI_EC_HDR_SIZE_CRC);
ec_hdr->hdr_crc = cpu_to_be32(crc);
- err = paranoid_check_ec_hdr(ubi, pnum, ec_hdr);
+ err = self_check_ec_hdr(ubi, pnum, ec_hdr);
if (err)
return err;
@@ -905,40 +896,40 @@
int usable_leb_size = ubi->leb_size - data_pad;
if (copy_flag != 0 && copy_flag != 1) {
- dbg_err("bad copy_flag");
+ ubi_err("bad copy_flag");
goto bad;
}
if (vol_id < 0 || lnum < 0 || data_size < 0 || used_ebs < 0 ||
data_pad < 0) {
- dbg_err("negative values");
+ ubi_err("negative values");
goto bad;
}
if (vol_id >= UBI_MAX_VOLUMES && vol_id < UBI_INTERNAL_VOL_START) {
- dbg_err("bad vol_id");
+ ubi_err("bad vol_id");
goto bad;
}
if (vol_id < UBI_INTERNAL_VOL_START && compat != 0) {
- dbg_err("bad compat");
+ ubi_err("bad compat");
goto bad;
}
if (vol_id >= UBI_INTERNAL_VOL_START && compat != UBI_COMPAT_DELETE &&
compat != UBI_COMPAT_RO && compat != UBI_COMPAT_PRESERVE &&
compat != UBI_COMPAT_REJECT) {
- dbg_err("bad compat");
+ ubi_err("bad compat");
goto bad;
}
if (vol_type != UBI_VID_DYNAMIC && vol_type != UBI_VID_STATIC) {
- dbg_err("bad vol_type");
+ ubi_err("bad vol_type");
goto bad;
}
if (data_pad >= ubi->leb_size / 2) {
- dbg_err("bad data_pad");
+ ubi_err("bad data_pad");
goto bad;
}
@@ -950,45 +941,45 @@
* mapped logical eraseblocks.
*/
if (used_ebs == 0) {
- dbg_err("zero used_ebs");
+ ubi_err("zero used_ebs");
goto bad;
}
if (data_size == 0) {
- dbg_err("zero data_size");
+ ubi_err("zero data_size");
goto bad;
}
if (lnum < used_ebs - 1) {
if (data_size != usable_leb_size) {
- dbg_err("bad data_size");
+ ubi_err("bad data_size");
goto bad;
}
} else if (lnum == used_ebs - 1) {
if (data_size == 0) {
- dbg_err("bad data_size at last LEB");
+ ubi_err("bad data_size at last LEB");
goto bad;
}
} else {
- dbg_err("too high lnum");
+ ubi_err("too high lnum");
goto bad;
}
} else {
if (copy_flag == 0) {
if (data_crc != 0) {
- dbg_err("non-zero data CRC");
+ ubi_err("non-zero data CRC");
goto bad;
}
if (data_size != 0) {
- dbg_err("non-zero data_size");
+ ubi_err("non-zero data_size");
goto bad;
}
} else {
if (data_size == 0) {
- dbg_err("zero data_size of copy");
+ ubi_err("zero data_size of copy");
goto bad;
}
}
if (used_ebs != 0) {
- dbg_err("bad used_ebs");
+ ubi_err("bad used_ebs");
goto bad;
}
}
@@ -997,8 +988,8 @@
bad:
ubi_err("bad VID header");
- ubi_dbg_dump_vid_hdr(vid_hdr);
- ubi_dbg_dump_stack();
+ ubi_dump_vid_hdr(vid_hdr);
+ dump_stack();
return 1;
}
@@ -1054,7 +1045,7 @@
if (verbose) {
ubi_warn("bad magic number at PEB %d: %08x instead of "
"%08x", pnum, magic, UBI_VID_HDR_MAGIC);
- ubi_dbg_dump_vid_hdr(vid_hdr);
+ ubi_dump_vid_hdr(vid_hdr);
}
dbg_bld("bad magic number at PEB %d: %08x instead of "
"%08x", pnum, magic, UBI_VID_HDR_MAGIC);
@@ -1068,7 +1059,7 @@
if (verbose) {
ubi_warn("bad CRC at PEB %d, calculated %#08x, "
"read %#08x", pnum, crc, hdr_crc);
- ubi_dbg_dump_vid_hdr(vid_hdr);
+ ubi_dump_vid_hdr(vid_hdr);
}
dbg_bld("bad CRC at PEB %d, calculated %#08x, "
"read %#08x", pnum, crc, hdr_crc);
@@ -1112,7 +1103,7 @@
dbg_io("write VID header to PEB %d", pnum);
ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
- err = paranoid_check_peb_ec_hdr(ubi, pnum);
+ err = self_check_peb_ec_hdr(ubi, pnum);
if (err)
return err;
@@ -1121,7 +1112,7 @@
crc = crc32(UBI_CRC32_INIT, vid_hdr, UBI_VID_HDR_SIZE_CRC);
vid_hdr->hdr_crc = cpu_to_be32(crc);
- err = paranoid_check_vid_hdr(ubi, pnum, vid_hdr);
+ err = self_check_vid_hdr(ubi, pnum, vid_hdr);
if (err)
return err;
@@ -1131,17 +1122,15 @@
return err;
}
-#ifdef CONFIG_MTD_UBI_DEBUG
-
/**
- * paranoid_check_not_bad - ensure that a physical eraseblock is not bad.
+ * self_check_not_bad - ensure that a physical eraseblock is not bad.
* @ubi: UBI device description object
* @pnum: physical eraseblock number to check
*
* This function returns zero if the physical eraseblock is good, %-EINVAL if
* it is bad and a negative error code if an error occurred.
*/
-static int paranoid_check_not_bad(const struct ubi_device *ubi, int pnum)
+static int self_check_not_bad(const struct ubi_device *ubi, int pnum)
{
int err;
@@ -1152,13 +1141,13 @@
if (!err)
return err;
- ubi_err("paranoid check failed for PEB %d", pnum);
- ubi_dbg_dump_stack();
+ ubi_err("self-check failed for PEB %d", pnum);
+ dump_stack();
return err > 0 ? -EINVAL : err;
}
/**
- * paranoid_check_ec_hdr - check if an erase counter header is all right.
+ * self_check_ec_hdr - check if an erase counter header is all right.
* @ubi: UBI device description object
* @pnum: physical eraseblock number the erase counter header belongs to
* @ec_hdr: the erase counter header to check
@@ -1166,8 +1155,8 @@
* This function returns zero if the erase counter header contains valid
* values, and %-EINVAL if not.
*/
-static int paranoid_check_ec_hdr(const struct ubi_device *ubi, int pnum,
- const struct ubi_ec_hdr *ec_hdr)
+static int self_check_ec_hdr(const struct ubi_device *ubi, int pnum,
+ const struct ubi_ec_hdr *ec_hdr)
{
int err;
uint32_t magic;
@@ -1184,27 +1173,27 @@
err = validate_ec_hdr(ubi, ec_hdr);
if (err) {
- ubi_err("paranoid check failed for PEB %d", pnum);
+ ubi_err("self-check failed for PEB %d", pnum);
goto fail;
}
return 0;
fail:
- ubi_dbg_dump_ec_hdr(ec_hdr);
- ubi_dbg_dump_stack();
+ ubi_dump_ec_hdr(ec_hdr);
+ dump_stack();
return -EINVAL;
}
/**
- * paranoid_check_peb_ec_hdr - check erase counter header.
+ * self_check_peb_ec_hdr - check erase counter header.
* @ubi: UBI device description object
* @pnum: the physical eraseblock number to check
*
* This function returns zero if the erase counter header is all right and and
* a negative error code if not or if an error occurred.
*/
-static int paranoid_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum)
+static int self_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum)
{
int err;
uint32_t crc, hdr_crc;
@@ -1225,14 +1214,14 @@
hdr_crc = be32_to_cpu(ec_hdr->hdr_crc);
if (hdr_crc != crc) {
ubi_err("bad CRC, calculated %#08x, read %#08x", crc, hdr_crc);
- ubi_err("paranoid check failed for PEB %d", pnum);
- ubi_dbg_dump_ec_hdr(ec_hdr);
- ubi_dbg_dump_stack();
+ ubi_err("self-check failed for PEB %d", pnum);
+ ubi_dump_ec_hdr(ec_hdr);
+ dump_stack();
err = -EINVAL;
goto exit;
}
- err = paranoid_check_ec_hdr(ubi, pnum, ec_hdr);
+ err = self_check_ec_hdr(ubi, pnum, ec_hdr);
exit:
kfree(ec_hdr);
@@ -1240,7 +1229,7 @@
}
/**
- * paranoid_check_vid_hdr - check that a volume identifier header is all right.
+ * self_check_vid_hdr - check that a volume identifier header is all right.
* @ubi: UBI device description object
* @pnum: physical eraseblock number the volume identifier header belongs to
* @vid_hdr: the volume identifier header to check
@@ -1248,8 +1237,8 @@
* This function returns zero if the volume identifier header is all right, and
* %-EINVAL if not.
*/
-static int paranoid_check_vid_hdr(const struct ubi_device *ubi, int pnum,
- const struct ubi_vid_hdr *vid_hdr)
+static int self_check_vid_hdr(const struct ubi_device *ubi, int pnum,
+ const struct ubi_vid_hdr *vid_hdr)
{
int err;
uint32_t magic;
@@ -1266,29 +1255,29 @@
err = validate_vid_hdr(ubi, vid_hdr);
if (err) {
- ubi_err("paranoid check failed for PEB %d", pnum);
+ ubi_err("self-check failed for PEB %d", pnum);
goto fail;
}
return err;
fail:
- ubi_err("paranoid check failed for PEB %d", pnum);
- ubi_dbg_dump_vid_hdr(vid_hdr);
- ubi_dbg_dump_stack();
+ ubi_err("self-check failed for PEB %d", pnum);
+ ubi_dump_vid_hdr(vid_hdr);
+ dump_stack();
return -EINVAL;
}
/**
- * paranoid_check_peb_vid_hdr - check volume identifier header.
+ * self_check_peb_vid_hdr - check volume identifier header.
* @ubi: UBI device description object
* @pnum: the physical eraseblock number to check
*
* This function returns zero if the volume identifier header is all right,
* and a negative error code if not or if an error occurred.
*/
-static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum)
+static int self_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum)
{
int err;
uint32_t crc, hdr_crc;
@@ -1313,14 +1302,14 @@
if (hdr_crc != crc) {
ubi_err("bad VID header CRC at PEB %d, calculated %#08x, "
"read %#08x", pnum, crc, hdr_crc);
- ubi_err("paranoid check failed for PEB %d", pnum);
- ubi_dbg_dump_vid_hdr(vid_hdr);
- ubi_dbg_dump_stack();
+ ubi_err("self-check failed for PEB %d", pnum);
+ ubi_dump_vid_hdr(vid_hdr);
+ dump_stack();
err = -EINVAL;
goto exit;
}
- err = paranoid_check_vid_hdr(ubi, pnum, vid_hdr);
+ err = self_check_vid_hdr(ubi, pnum, vid_hdr);
exit:
ubi_free_vid_hdr(ubi, vid_hdr);
@@ -1328,7 +1317,7 @@
}
/**
- * ubi_dbg_check_write - make sure write succeeded.
+ * self_check_write - make sure write succeeded.
* @ubi: UBI device description object
* @buf: buffer with data which were written
* @pnum: physical eraseblock number the data were written to
@@ -1339,8 +1328,8 @@
* the original data buffer - the data have to match. Returns zero if the data
* match and a negative error code if not or in case of failure.
*/
-int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,
- int offset, int len)
+static int self_check_write(struct ubi_device *ubi, const void *buf, int pnum,
+ int offset, int len)
{
int err, i;
size_t read;
@@ -1368,7 +1357,7 @@
if (c == c1)
continue;
- ubi_err("paranoid check failed for PEB %d:%d, len %d",
+ ubi_err("self-check failed for PEB %d:%d, len %d",
pnum, offset, len);
ubi_msg("data differ at position %d", i);
dump_len = max_t(int, 128, len - i);
@@ -1380,7 +1369,7 @@
i, i + dump_len);
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
buf1 + i, dump_len, 1);
- ubi_dbg_dump_stack();
+ dump_stack();
err = -EINVAL;
goto out_free;
}
@@ -1394,7 +1383,7 @@
}
/**
- * ubi_dbg_check_all_ff - check that a region of flash is empty.
+ * ubi_self_check_all_ff - check that a region of flash is empty.
* @ubi: UBI device description object
* @pnum: the physical eraseblock number to check
* @offset: the starting offset within the physical eraseblock to check
@@ -1404,7 +1393,7 @@
* @offset of the physical eraseblock @pnum, and a negative error code if not
* or if an error occurred.
*/
-int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len)
+int ubi_self_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len)
{
size_t read;
int err;
@@ -1438,14 +1427,12 @@
return 0;
fail:
- ubi_err("paranoid check failed for PEB %d", pnum);
+ ubi_err("self-check failed for PEB %d", pnum);
ubi_msg("hex dump of the %d-%d region", offset, offset + len);
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1);
err = -EINVAL;
error:
- ubi_dbg_dump_stack();
+ dump_stack();
vfree(buf);
return err;
}
-
-#endif /* CONFIG_MTD_UBI_DEBUG */
diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index 9fdb353..3aac1ac 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -221,7 +221,7 @@
kfree(desc);
out_put_ubi:
ubi_put_device(ubi);
- dbg_err("cannot open device %d, volume %d, error %d",
+ ubi_err("cannot open device %d, volume %d, error %d",
ubi_num, vol_id, err);
return ERR_PTR(err);
}
@@ -426,11 +426,9 @@
* @buf: data to write
* @offset: offset within the logical eraseblock where to write
* @len: how many bytes to write
- * @dtype: expected data type
*
* This function writes @len bytes of data from @buf to offset @offset of
- * logical eraseblock @lnum. The @dtype argument describes expected lifetime of
- * the data.
+ * logical eraseblock @lnum.
*
* This function takes care of physical eraseblock write failures. If write to
* the physical eraseblock write operation fails, the logical eraseblock is
@@ -447,7 +445,7 @@
* returns immediately with %-EBADF code.
*/
int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
- int offset, int len, int dtype)
+ int offset, int len)
{
struct ubi_volume *vol = desc->vol;
struct ubi_device *ubi = vol->ubi;
@@ -466,17 +464,13 @@
offset & (ubi->min_io_size - 1) || len & (ubi->min_io_size - 1))
return -EINVAL;
- if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
- dtype != UBI_UNKNOWN)
- return -EINVAL;
-
if (vol->upd_marker)
return -EBADF;
if (len == 0)
return 0;
- return ubi_eba_write_leb(ubi, vol, lnum, buf, offset, len, dtype);
+ return ubi_eba_write_leb(ubi, vol, lnum, buf, offset, len);
}
EXPORT_SYMBOL_GPL(ubi_leb_write);
@@ -486,7 +480,6 @@
* @lnum: logical eraseblock number to change
* @buf: data to write
* @len: how many bytes to write
- * @dtype: expected data type
*
* This function changes the contents of a logical eraseblock atomically. @buf
* has to contain new logical eraseblock data, and @len - the length of the
@@ -497,7 +490,7 @@
* code in case of failure.
*/
int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
- int len, int dtype)
+ int len)
{
struct ubi_volume *vol = desc->vol;
struct ubi_device *ubi = vol->ubi;
@@ -515,17 +508,13 @@
len > vol->usable_leb_size || len & (ubi->min_io_size - 1))
return -EINVAL;
- if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
- dtype != UBI_UNKNOWN)
- return -EINVAL;
-
if (vol->upd_marker)
return -EBADF;
if (len == 0)
return 0;
- return ubi_eba_atomic_leb_change(ubi, vol, lnum, buf, len, dtype);
+ return ubi_eba_atomic_leb_change(ubi, vol, lnum, buf, len);
}
EXPORT_SYMBOL_GPL(ubi_leb_change);
@@ -562,7 +551,7 @@
if (err)
return err;
- return ubi_wl_flush(ubi);
+ return ubi_wl_flush(ubi, vol->vol_id, lnum);
}
EXPORT_SYMBOL_GPL(ubi_leb_erase);
@@ -626,7 +615,6 @@
* ubi_leb_map - map logical eraseblock to a physical eraseblock.
* @desc: volume descriptor
* @lnum: logical eraseblock number
- * @dtype: expected data type
*
* This function maps an un-mapped logical eraseblock @lnum to a physical
* eraseblock. This means, that after a successful invocation of this
@@ -639,7 +627,7 @@
* eraseblock is already mapped, and other negative error codes in case of
* other failures.
*/
-int ubi_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype)
+int ubi_leb_map(struct ubi_volume_desc *desc, int lnum)
{
struct ubi_volume *vol = desc->vol;
struct ubi_device *ubi = vol->ubi;
@@ -652,17 +640,13 @@
if (lnum < 0 || lnum >= vol->reserved_pebs)
return -EINVAL;
- if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
- dtype != UBI_UNKNOWN)
- return -EINVAL;
-
if (vol->upd_marker)
return -EBADF;
if (vol->eba_tbl[lnum] >= 0)
return -EBADMSG;
- return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0, dtype);
+ return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0);
}
EXPORT_SYMBOL_GPL(ubi_leb_map);
@@ -720,6 +704,33 @@
}
EXPORT_SYMBOL_GPL(ubi_sync);
+/**
+ * ubi_flush - flush UBI work queue.
+ * @ubi_num: UBI device to flush work queue
+ * @vol_id: volume id to flush for
+ * @lnum: logical eraseblock number to flush for
+ *
+ * This function executes all pending works for a particular volume id / logical
+ * eraseblock number pair. If either value is set to %UBI_ALL, then it acts as
+ * a wildcard for all of the corresponding volume numbers or logical
+ * eraseblock numbers. It returns zero in case of success and a negative error
+ * code in case of failure.
+ */
+int ubi_flush(int ubi_num, int vol_id, int lnum)
+{
+ struct ubi_device *ubi;
+ int err = 0;
+
+ ubi = ubi_get_device(ubi_num);
+ if (!ubi)
+ return -ENODEV;
+
+ err = ubi_wl_flush(ubi, vol_id, lnum);
+ ubi_put_device(ubi);
+ return err;
+}
+EXPORT_SYMBOL_GPL(ubi_flush);
+
BLOCKING_NOTIFIER_HEAD(ubi_notifiers);
/**
diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c
deleted file mode 100644
index 12c43b4..0000000
--- a/drivers/mtd/ubi/scan.c
+++ /dev/null
@@ -1,1605 +0,0 @@
-/*
- * Copyright (c) International Business Machines Corp., 2006
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Author: Artem Bityutskiy (Битюцкий Артём)
- */
-
-/*
- * UBI scanning sub-system.
- *
- * This sub-system is responsible for scanning the flash media, checking UBI
- * headers and providing complete information about the UBI flash image.
- *
- * The scanning information is represented by a &struct ubi_scan_info' object.
- * Information about found volumes is represented by &struct ubi_scan_volume
- * objects which are kept in volume RB-tree with root at the @volumes field.
- * The RB-tree is indexed by the volume ID.
- *
- * Scanned logical eraseblocks are represented by &struct ubi_scan_leb objects.
- * These objects are kept in per-volume RB-trees with the root at the
- * corresponding &struct ubi_scan_volume object. To put it differently, we keep
- * an RB-tree of per-volume objects and each of these objects is the root of
- * RB-tree of per-eraseblock objects.
- *
- * Corrupted physical eraseblocks are put to the @corr list, free physical
- * eraseblocks are put to the @free list and the physical eraseblock to be
- * erased are put to the @erase list.
- *
- * About corruptions
- * ~~~~~~~~~~~~~~~~~
- *
- * UBI protects EC and VID headers with CRC-32 checksums, so it can detect
- * whether the headers are corrupted or not. Sometimes UBI also protects the
- * data with CRC-32, e.g., when it executes the atomic LEB change operation, or
- * when it moves the contents of a PEB for wear-leveling purposes.
- *
- * UBI tries to distinguish between 2 types of corruptions.
- *
- * 1. Corruptions caused by power cuts. These are expected corruptions and UBI
- * tries to handle them gracefully, without printing too many warnings and
- * error messages. The idea is that we do not lose important data in these case
- * - we may lose only the data which was being written to the media just before
- * the power cut happened, and the upper layers (e.g., UBIFS) are supposed to
- * handle such data losses (e.g., by using the FS journal).
- *
- * When UBI detects a corruption (CRC-32 mismatch) in a PEB, and it looks like
- * the reason is a power cut, UBI puts this PEB to the @erase list, and all
- * PEBs in the @erase list are scheduled for erasure later.
- *
- * 2. Unexpected corruptions which are not caused by power cuts. During
- * scanning, such PEBs are put to the @corr list and UBI preserves them.
- * Obviously, this lessens the amount of available PEBs, and if at some point
- * UBI runs out of free PEBs, it switches to R/O mode. UBI also loudly informs
- * about such PEBs every time the MTD device is attached.
- *
- * However, it is difficult to reliably distinguish between these types of
- * corruptions and UBI's strategy is as follows. UBI assumes corruption type 2
- * if the VID header is corrupted and the data area does not contain all 0xFFs,
- * and there were no bit-flips or integrity errors while reading the data area.
- * Otherwise UBI assumes corruption type 1. So the decision criteria are as
- * follows.
- * o If the data area contains only 0xFFs, there is no data, and it is safe
- * to just erase this PEB - this is corruption type 1.
- * o If the data area has bit-flips or data integrity errors (ECC errors on
- * NAND), it is probably a PEB which was being erased when power cut
- * happened, so this is corruption type 1. However, this is just a guess,
- * which might be wrong.
- * o Otherwise this it corruption type 2.
- */
-
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/crc32.h>
-#include <linux/math64.h>
-#include <linux/random.h>
-#include "ubi.h"
-
-#ifdef CONFIG_MTD_UBI_DEBUG
-static int paranoid_check_si(struct ubi_device *ubi, struct ubi_scan_info *si);
-#else
-#define paranoid_check_si(ubi, si) 0
-#endif
-
-/* Temporary variables used during scanning */
-static struct ubi_ec_hdr *ech;
-static struct ubi_vid_hdr *vidh;
-
-/**
- * add_to_list - add physical eraseblock to a list.
- * @si: scanning information
- * @pnum: physical eraseblock number to add
- * @ec: erase counter of the physical eraseblock
- * @to_head: if not zero, add to the head of the list
- * @list: the list to add to
- *
- * This function adds physical eraseblock @pnum to free, erase, or alien lists.
- * If @to_head is not zero, PEB will be added to the head of the list, which
- * basically means it will be processed first later. E.g., we add corrupted
- * PEBs (corrupted due to power cuts) to the head of the erase list to make
- * sure we erase them first and get rid of corruptions ASAP. This function
- * returns zero in case of success and a negative error code in case of
- * failure.
- */
-static int add_to_list(struct ubi_scan_info *si, int pnum, int ec, int to_head,
- struct list_head *list)
-{
- struct ubi_scan_leb *seb;
-
- if (list == &si->free) {
- dbg_bld("add to free: PEB %d, EC %d", pnum, ec);
- } else if (list == &si->erase) {
- dbg_bld("add to erase: PEB %d, EC %d", pnum, ec);
- } else if (list == &si->alien) {
- dbg_bld("add to alien: PEB %d, EC %d", pnum, ec);
- si->alien_peb_count += 1;
- } else
- BUG();
-
- seb = kmem_cache_alloc(si->scan_leb_slab, GFP_KERNEL);
- if (!seb)
- return -ENOMEM;
-
- seb->pnum = pnum;
- seb->ec = ec;
- if (to_head)
- list_add(&seb->u.list, list);
- else
- list_add_tail(&seb->u.list, list);
- return 0;
-}
-
-/**
- * add_corrupted - add a corrupted physical eraseblock.
- * @si: scanning information
- * @pnum: physical eraseblock number to add
- * @ec: erase counter of the physical eraseblock
- *
- * This function adds corrupted physical eraseblock @pnum to the 'corr' list.
- * The corruption was presumably not caused by a power cut. Returns zero in
- * case of success and a negative error code in case of failure.
- */
-static int add_corrupted(struct ubi_scan_info *si, int pnum, int ec)
-{
- struct ubi_scan_leb *seb;
-
- dbg_bld("add to corrupted: PEB %d, EC %d", pnum, ec);
-
- seb = kmem_cache_alloc(si->scan_leb_slab, GFP_KERNEL);
- if (!seb)
- return -ENOMEM;
-
- si->corr_peb_count += 1;
- seb->pnum = pnum;
- seb->ec = ec;
- list_add(&seb->u.list, &si->corr);
- return 0;
-}
-
-/**
- * validate_vid_hdr - check volume identifier header.
- * @vid_hdr: the volume identifier header to check
- * @sv: information about the volume this logical eraseblock belongs to
- * @pnum: physical eraseblock number the VID header came from
- *
- * This function checks that data stored in @vid_hdr is consistent. Returns
- * non-zero if an inconsistency was found and zero if not.
- *
- * Note, UBI does sanity check of everything it reads from the flash media.
- * Most of the checks are done in the I/O sub-system. Here we check that the
- * information in the VID header is consistent to the information in other VID
- * headers of the same volume.
- */
-static int validate_vid_hdr(const struct ubi_vid_hdr *vid_hdr,
- const struct ubi_scan_volume *sv, int pnum)
-{
- int vol_type = vid_hdr->vol_type;
- int vol_id = be32_to_cpu(vid_hdr->vol_id);
- int used_ebs = be32_to_cpu(vid_hdr->used_ebs);
- int data_pad = be32_to_cpu(vid_hdr->data_pad);
-
- if (sv->leb_count != 0) {
- int sv_vol_type;
-
- /*
- * This is not the first logical eraseblock belonging to this
- * volume. Ensure that the data in its VID header is consistent
- * to the data in previous logical eraseblock headers.
- */
-
- if (vol_id != sv->vol_id) {
- dbg_err("inconsistent vol_id");
- goto bad;
- }
-
- if (sv->vol_type == UBI_STATIC_VOLUME)
- sv_vol_type = UBI_VID_STATIC;
- else
- sv_vol_type = UBI_VID_DYNAMIC;
-
- if (vol_type != sv_vol_type) {
- dbg_err("inconsistent vol_type");
- goto bad;
- }
-
- if (used_ebs != sv->used_ebs) {
- dbg_err("inconsistent used_ebs");
- goto bad;
- }
-
- if (data_pad != sv->data_pad) {
- dbg_err("inconsistent data_pad");
- goto bad;
- }
- }
-
- return 0;
-
-bad:
- ubi_err("inconsistent VID header at PEB %d", pnum);
- ubi_dbg_dump_vid_hdr(vid_hdr);
- ubi_dbg_dump_sv(sv);
- return -EINVAL;
-}
-
-/**
- * add_volume - add volume to the scanning information.
- * @si: scanning information
- * @vol_id: ID of the volume to add
- * @pnum: physical eraseblock number
- * @vid_hdr: volume identifier header
- *
- * If the volume corresponding to the @vid_hdr logical eraseblock is already
- * present in the scanning information, this function does nothing. Otherwise
- * it adds corresponding volume to the scanning information. Returns a pointer
- * to the scanning volume object in case of success and a negative error code
- * in case of failure.
- */
-static struct ubi_scan_volume *add_volume(struct ubi_scan_info *si, int vol_id,
- int pnum,
- const struct ubi_vid_hdr *vid_hdr)
-{
- struct ubi_scan_volume *sv;
- struct rb_node **p = &si->volumes.rb_node, *parent = NULL;
-
- ubi_assert(vol_id == be32_to_cpu(vid_hdr->vol_id));
-
- /* Walk the volume RB-tree to look if this volume is already present */
- while (*p) {
- parent = *p;
- sv = rb_entry(parent, struct ubi_scan_volume, rb);
-
- if (vol_id == sv->vol_id)
- return sv;
-
- if (vol_id > sv->vol_id)
- p = &(*p)->rb_left;
- else
- p = &(*p)->rb_right;
- }
-
- /* The volume is absent - add it */
- sv = kmalloc(sizeof(struct ubi_scan_volume), GFP_KERNEL);
- if (!sv)
- return ERR_PTR(-ENOMEM);
-
- sv->highest_lnum = sv->leb_count = 0;
- sv->vol_id = vol_id;
- sv->root = RB_ROOT;
- sv->used_ebs = be32_to_cpu(vid_hdr->used_ebs);
- sv->data_pad = be32_to_cpu(vid_hdr->data_pad);
- sv->compat = vid_hdr->compat;
- sv->vol_type = vid_hdr->vol_type == UBI_VID_DYNAMIC ? UBI_DYNAMIC_VOLUME
- : UBI_STATIC_VOLUME;
- if (vol_id > si->highest_vol_id)
- si->highest_vol_id = vol_id;
-
- rb_link_node(&sv->rb, parent, p);
- rb_insert_color(&sv->rb, &si->volumes);
- si->vols_found += 1;
- dbg_bld("added volume %d", vol_id);
- return sv;
-}
-
-/**
- * compare_lebs - find out which logical eraseblock is newer.
- * @ubi: UBI device description object
- * @seb: first logical eraseblock to compare
- * @pnum: physical eraseblock number of the second logical eraseblock to
- * compare
- * @vid_hdr: volume identifier header of the second logical eraseblock
- *
- * This function compares 2 copies of a LEB and informs which one is newer. In
- * case of success this function returns a positive value, in case of failure, a
- * negative error code is returned. The success return codes use the following
- * bits:
- * o bit 0 is cleared: the first PEB (described by @seb) is newer than the
- * second PEB (described by @pnum and @vid_hdr);
- * o bit 0 is set: the second PEB is newer;
- * o bit 1 is cleared: no bit-flips were detected in the newer LEB;
- * o bit 1 is set: bit-flips were detected in the newer LEB;
- * o bit 2 is cleared: the older LEB is not corrupted;
- * o bit 2 is set: the older LEB is corrupted.
- */
-static int compare_lebs(struct ubi_device *ubi, const struct ubi_scan_leb *seb,
- int pnum, const struct ubi_vid_hdr *vid_hdr)
-{
- void *buf;
- int len, err, second_is_newer, bitflips = 0, corrupted = 0;
- uint32_t data_crc, crc;
- struct ubi_vid_hdr *vh = NULL;
- unsigned long long sqnum2 = be64_to_cpu(vid_hdr->sqnum);
-
- if (sqnum2 == seb->sqnum) {
- /*
- * This must be a really ancient UBI image which has been
- * created before sequence numbers support has been added. At
- * that times we used 32-bit LEB versions stored in logical
- * eraseblocks. That was before UBI got into mainline. We do not
- * support these images anymore. Well, those images still work,
- * but only if no unclean reboots happened.
- */
- ubi_err("unsupported on-flash UBI format\n");
- return -EINVAL;
- }
-
- /* Obviously the LEB with lower sequence counter is older */
- second_is_newer = !!(sqnum2 > seb->sqnum);
-
- /*
- * Now we know which copy is newer. If the copy flag of the PEB with
- * newer version is not set, then we just return, otherwise we have to
- * check data CRC. For the second PEB we already have the VID header,
- * for the first one - we'll need to re-read it from flash.
- *
- * Note: this may be optimized so that we wouldn't read twice.
- */
-
- if (second_is_newer) {
- if (!vid_hdr->copy_flag) {
- /* It is not a copy, so it is newer */
- dbg_bld("second PEB %d is newer, copy_flag is unset",
- pnum);
- return 1;
- }
- } else {
- if (!seb->copy_flag) {
- /* It is not a copy, so it is newer */
- dbg_bld("first PEB %d is newer, copy_flag is unset",
- pnum);
- return bitflips << 1;
- }
-
- vh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);
- if (!vh)
- return -ENOMEM;
-
- pnum = seb->pnum;
- err = ubi_io_read_vid_hdr(ubi, pnum, vh, 0);
- if (err) {
- if (err == UBI_IO_BITFLIPS)
- bitflips = 1;
- else {
- dbg_err("VID of PEB %d header is bad, but it "
- "was OK earlier, err %d", pnum, err);
- if (err > 0)
- err = -EIO;
-
- goto out_free_vidh;
- }
- }
-
- vid_hdr = vh;
- }
-
- /* Read the data of the copy and check the CRC */
-
- len = be32_to_cpu(vid_hdr->data_size);
- buf = vmalloc(len);
- if (!buf) {
- err = -ENOMEM;
- goto out_free_vidh;
- }
-
- err = ubi_io_read_data(ubi, buf, pnum, 0, len);
- if (err && err != UBI_IO_BITFLIPS && !mtd_is_eccerr(err))
- goto out_free_buf;
-
- data_crc = be32_to_cpu(vid_hdr->data_crc);
- crc = crc32(UBI_CRC32_INIT, buf, len);
- if (crc != data_crc) {
- dbg_bld("PEB %d CRC error: calculated %#08x, must be %#08x",
- pnum, crc, data_crc);
- corrupted = 1;
- bitflips = 0;
- second_is_newer = !second_is_newer;
- } else {
- dbg_bld("PEB %d CRC is OK", pnum);
- bitflips = !!err;
- }
-
- vfree(buf);
- ubi_free_vid_hdr(ubi, vh);
-
- if (second_is_newer)
- dbg_bld("second PEB %d is newer, copy_flag is set", pnum);
- else
- dbg_bld("first PEB %d is newer, copy_flag is set", pnum);
-
- return second_is_newer | (bitflips << 1) | (corrupted << 2);
-
-out_free_buf:
- vfree(buf);
-out_free_vidh:
- ubi_free_vid_hdr(ubi, vh);
- return err;
-}
-
-/**
- * ubi_scan_add_used - add physical eraseblock to the scanning information.
- * @ubi: UBI device description object
- * @si: scanning information
- * @pnum: the physical eraseblock number
- * @ec: erase counter
- * @vid_hdr: the volume identifier header
- * @bitflips: if bit-flips were detected when this physical eraseblock was read
- *
- * This function adds information about a used physical eraseblock to the
- * 'used' tree of the corresponding volume. The function is rather complex
- * because it has to handle cases when this is not the first physical
- * eraseblock belonging to the same logical eraseblock, and the newer one has
- * to be picked, while the older one has to be dropped. This function returns
- * zero in case of success and a negative error code in case of failure.
- */
-int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
- int pnum, int ec, const struct ubi_vid_hdr *vid_hdr,
- int bitflips)
-{
- int err, vol_id, lnum;
- unsigned long long sqnum;
- struct ubi_scan_volume *sv;
- struct ubi_scan_leb *seb;
- struct rb_node **p, *parent = NULL;
-
- vol_id = be32_to_cpu(vid_hdr->vol_id);
- lnum = be32_to_cpu(vid_hdr->lnum);
- sqnum = be64_to_cpu(vid_hdr->sqnum);
-
- dbg_bld("PEB %d, LEB %d:%d, EC %d, sqnum %llu, bitflips %d",
- pnum, vol_id, lnum, ec, sqnum, bitflips);
-
- sv = add_volume(si, vol_id, pnum, vid_hdr);
- if (IS_ERR(sv))
- return PTR_ERR(sv);
-
- if (si->max_sqnum < sqnum)
- si->max_sqnum = sqnum;
-
- /*
- * Walk the RB-tree of logical eraseblocks of volume @vol_id to look
- * if this is the first instance of this logical eraseblock or not.
- */
- p = &sv->root.rb_node;
- while (*p) {
- int cmp_res;
-
- parent = *p;
- seb = rb_entry(parent, struct ubi_scan_leb, u.rb);
- if (lnum != seb->lnum) {
- if (lnum < seb->lnum)
- p = &(*p)->rb_left;
- else
- p = &(*p)->rb_right;
- continue;
- }
-
- /*
- * There is already a physical eraseblock describing the same
- * logical eraseblock present.
- */
-
- dbg_bld("this LEB already exists: PEB %d, sqnum %llu, "
- "EC %d", seb->pnum, seb->sqnum, seb->ec);
-
- /*
- * Make sure that the logical eraseblocks have different
- * sequence numbers. Otherwise the image is bad.
- *
- * However, if the sequence number is zero, we assume it must
- * be an ancient UBI image from the era when UBI did not have
- * sequence numbers. We still can attach these images, unless
- * there is a need to distinguish between old and new
- * eraseblocks, in which case we'll refuse the image in
- * 'compare_lebs()'. In other words, we attach old clean
- * images, but refuse attaching old images with duplicated
- * logical eraseblocks because there was an unclean reboot.
- */
- if (seb->sqnum == sqnum && sqnum != 0) {
- ubi_err("two LEBs with same sequence number %llu",
- sqnum);
- ubi_dbg_dump_seb(seb, 0);
- ubi_dbg_dump_vid_hdr(vid_hdr);
- return -EINVAL;
- }
-
- /*
- * Now we have to drop the older one and preserve the newer
- * one.
- */
- cmp_res = compare_lebs(ubi, seb, pnum, vid_hdr);
- if (cmp_res < 0)
- return cmp_res;
-
- if (cmp_res & 1) {
- /*
- * This logical eraseblock is newer than the one
- * found earlier.
- */
- err = validate_vid_hdr(vid_hdr, sv, pnum);
- if (err)
- return err;
-
- err = add_to_list(si, seb->pnum, seb->ec, cmp_res & 4,
- &si->erase);
- if (err)
- return err;
-
- seb->ec = ec;
- seb->pnum = pnum;
- seb->scrub = ((cmp_res & 2) || bitflips);
- seb->copy_flag = vid_hdr->copy_flag;
- seb->sqnum = sqnum;
-
- if (sv->highest_lnum == lnum)
- sv->last_data_size =
- be32_to_cpu(vid_hdr->data_size);
-
- return 0;
- } else {
- /*
- * This logical eraseblock is older than the one found
- * previously.
- */
- return add_to_list(si, pnum, ec, cmp_res & 4,
- &si->erase);
- }
- }
-
- /*
- * We've met this logical eraseblock for the first time, add it to the
- * scanning information.
- */
-
- err = validate_vid_hdr(vid_hdr, sv, pnum);
- if (err)
- return err;
-
- seb = kmem_cache_alloc(si->scan_leb_slab, GFP_KERNEL);
- if (!seb)
- return -ENOMEM;
-
- seb->ec = ec;
- seb->pnum = pnum;
- seb->lnum = lnum;
- seb->scrub = bitflips;
- seb->copy_flag = vid_hdr->copy_flag;
- seb->sqnum = sqnum;
-
- if (sv->highest_lnum <= lnum) {
- sv->highest_lnum = lnum;
- sv->last_data_size = be32_to_cpu(vid_hdr->data_size);
- }
-
- sv->leb_count += 1;
- rb_link_node(&seb->u.rb, parent, p);
- rb_insert_color(&seb->u.rb, &sv->root);
- return 0;
-}
-
-/**
- * ubi_scan_find_sv - find volume in the scanning information.
- * @si: scanning information
- * @vol_id: the requested volume ID
- *
- * This function returns a pointer to the volume description or %NULL if there
- * are no data about this volume in the scanning information.
- */
-struct ubi_scan_volume *ubi_scan_find_sv(const struct ubi_scan_info *si,
- int vol_id)
-{
- struct ubi_scan_volume *sv;
- struct rb_node *p = si->volumes.rb_node;
-
- while (p) {
- sv = rb_entry(p, struct ubi_scan_volume, rb);
-
- if (vol_id == sv->vol_id)
- return sv;
-
- if (vol_id > sv->vol_id)
- p = p->rb_left;
- else
- p = p->rb_right;
- }
-
- return NULL;
-}
-
-/**
- * ubi_scan_find_seb - find LEB in the volume scanning information.
- * @sv: a pointer to the volume scanning information
- * @lnum: the requested logical eraseblock
- *
- * This function returns a pointer to the scanning logical eraseblock or %NULL
- * if there are no data about it in the scanning volume information.
- */
-struct ubi_scan_leb *ubi_scan_find_seb(const struct ubi_scan_volume *sv,
- int lnum)
-{
- struct ubi_scan_leb *seb;
- struct rb_node *p = sv->root.rb_node;
-
- while (p) {
- seb = rb_entry(p, struct ubi_scan_leb, u.rb);
-
- if (lnum == seb->lnum)
- return seb;
-
- if (lnum > seb->lnum)
- p = p->rb_left;
- else
- p = p->rb_right;
- }
-
- return NULL;
-}
-
-/**
- * ubi_scan_rm_volume - delete scanning information about a volume.
- * @si: scanning information
- * @sv: the volume scanning information to delete
- */
-void ubi_scan_rm_volume(struct ubi_scan_info *si, struct ubi_scan_volume *sv)
-{
- struct rb_node *rb;
- struct ubi_scan_leb *seb;
-
- dbg_bld("remove scanning information about volume %d", sv->vol_id);
-
- while ((rb = rb_first(&sv->root))) {
- seb = rb_entry(rb, struct ubi_scan_leb, u.rb);
- rb_erase(&seb->u.rb, &sv->root);
- list_add_tail(&seb->u.list, &si->erase);
- }
-
- rb_erase(&sv->rb, &si->volumes);
- kfree(sv);
- si->vols_found -= 1;
-}
-
-/**
- * ubi_scan_erase_peb - erase a physical eraseblock.
- * @ubi: UBI device description object
- * @si: scanning information
- * @pnum: physical eraseblock number to erase;
- * @ec: erase counter value to write (%UBI_SCAN_UNKNOWN_EC if it is unknown)
- *
- * This function erases physical eraseblock 'pnum', and writes the erase
- * counter header to it. This function should only be used on UBI device
- * initialization stages, when the EBA sub-system had not been yet initialized.
- * This function returns zero in case of success and a negative error code in
- * case of failure.
- */
-int ubi_scan_erase_peb(struct ubi_device *ubi, const struct ubi_scan_info *si,
- int pnum, int ec)
-{
- int err;
- struct ubi_ec_hdr *ec_hdr;
-
- if ((long long)ec >= UBI_MAX_ERASECOUNTER) {
- /*
- * Erase counter overflow. Upgrade UBI and use 64-bit
- * erase counters internally.
- */
- ubi_err("erase counter overflow at PEB %d, EC %d", pnum, ec);
- return -EINVAL;
- }
-
- ec_hdr = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);
- if (!ec_hdr)
- return -ENOMEM;
-
- ec_hdr->ec = cpu_to_be64(ec);
-
- err = ubi_io_sync_erase(ubi, pnum, 0);
- if (err < 0)
- goto out_free;
-
- err = ubi_io_write_ec_hdr(ubi, pnum, ec_hdr);
-
-out_free:
- kfree(ec_hdr);
- return err;
-}
-
-/**
- * ubi_scan_get_free_peb - get a free physical eraseblock.
- * @ubi: UBI device description object
- * @si: scanning information
- *
- * This function returns a free physical eraseblock. It is supposed to be
- * called on the UBI initialization stages when the wear-leveling sub-system is
- * not initialized yet. This function picks a physical eraseblocks from one of
- * the lists, writes the EC header if it is needed, and removes it from the
- * list.
- *
- * This function returns scanning physical eraseblock information in case of
- * success and an error code in case of failure.
- */
-struct ubi_scan_leb *ubi_scan_get_free_peb(struct ubi_device *ubi,
- struct ubi_scan_info *si)
-{
- int err = 0;
- struct ubi_scan_leb *seb, *tmp_seb;
-
- if (!list_empty(&si->free)) {
- seb = list_entry(si->free.next, struct ubi_scan_leb, u.list);
- list_del(&seb->u.list);
- dbg_bld("return free PEB %d, EC %d", seb->pnum, seb->ec);
- return seb;
- }
-
- /*
- * We try to erase the first physical eraseblock from the erase list
- * and pick it if we succeed, or try to erase the next one if not. And
- * so forth. We don't want to take care about bad eraseblocks here -
- * they'll be handled later.
- */
- list_for_each_entry_safe(seb, tmp_seb, &si->erase, u.list) {
- if (seb->ec == UBI_SCAN_UNKNOWN_EC)
- seb->ec = si->mean_ec;
-
- err = ubi_scan_erase_peb(ubi, si, seb->pnum, seb->ec+1);
- if (err)
- continue;
-
- seb->ec += 1;
- list_del(&seb->u.list);
- dbg_bld("return PEB %d, EC %d", seb->pnum, seb->ec);
- return seb;
- }
-
- ubi_err("no free eraseblocks");
- return ERR_PTR(-ENOSPC);
-}
-
-/**
- * check_corruption - check the data area of PEB.
- * @ubi: UBI device description object
- * @vid_hrd: the (corrupted) VID header of this PEB
- * @pnum: the physical eraseblock number to check
- *
- * This is a helper function which is used to distinguish between VID header
- * corruptions caused by power cuts and other reasons. If the PEB contains only
- * 0xFF bytes in the data area, the VID header is most probably corrupted
- * because of a power cut (%0 is returned in this case). Otherwise, it was
- * probably corrupted for some other reasons (%1 is returned in this case). A
- * negative error code is returned if a read error occurred.
- *
- * If the corruption reason was a power cut, UBI can safely erase this PEB.
- * Otherwise, it should preserve it to avoid possibly destroying important
- * information.
- */
-static int check_corruption(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr,
- int pnum)
-{
- int err;
-
- mutex_lock(&ubi->buf_mutex);
- memset(ubi->peb_buf, 0x00, ubi->leb_size);
-
- err = ubi_io_read(ubi, ubi->peb_buf, pnum, ubi->leb_start,
- ubi->leb_size);
- if (err == UBI_IO_BITFLIPS || mtd_is_eccerr(err)) {
- /*
- * Bit-flips or integrity errors while reading the data area.
- * It is difficult to say for sure what type of corruption is
- * this, but presumably a power cut happened while this PEB was
- * erased, so it became unstable and corrupted, and should be
- * erased.
- */
- err = 0;
- goto out_unlock;
- }
-
- if (err)
- goto out_unlock;
-
- if (ubi_check_pattern(ubi->peb_buf, 0xFF, ubi->leb_size))
- goto out_unlock;
-
- ubi_err("PEB %d contains corrupted VID header, and the data does not "
- "contain all 0xFF, this may be a non-UBI PEB or a severe VID "
- "header corruption which requires manual inspection", pnum);
- ubi_dbg_dump_vid_hdr(vid_hdr);
- dbg_msg("hexdump of PEB %d offset %d, length %d",
- pnum, ubi->leb_start, ubi->leb_size);
- ubi_dbg_print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
- ubi->peb_buf, ubi->leb_size, 1);
- err = 1;
-
-out_unlock:
- mutex_unlock(&ubi->buf_mutex);
- return err;
-}
-
-/**
- * process_eb - read, check UBI headers, and add them to scanning information.
- * @ubi: UBI device description object
- * @si: scanning information
- * @pnum: the physical eraseblock number
- *
- * This function returns a zero if the physical eraseblock was successfully
- * handled and a negative error code in case of failure.
- */
-static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
- int pnum)
-{
- long long uninitialized_var(ec);
- int err, bitflips = 0, vol_id, ec_err = 0;
-
- dbg_bld("scan PEB %d", pnum);
-
- /* Skip bad physical eraseblocks */
- err = ubi_io_is_bad(ubi, pnum);
- if (err < 0)
- return err;
- else if (err) {
- /*
- * FIXME: this is actually duty of the I/O sub-system to
- * initialize this, but MTD does not provide enough
- * information.
- */
- si->bad_peb_count += 1;
- return 0;
- }
-
- err = ubi_io_read_ec_hdr(ubi, pnum, ech, 0);
- if (err < 0)
- return err;
- switch (err) {
- case 0:
- break;
- case UBI_IO_BITFLIPS:
- bitflips = 1;
- break;
- case UBI_IO_FF:
- si->empty_peb_count += 1;
- return add_to_list(si, pnum, UBI_SCAN_UNKNOWN_EC, 0,
- &si->erase);
- case UBI_IO_FF_BITFLIPS:
- si->empty_peb_count += 1;
- return add_to_list(si, pnum, UBI_SCAN_UNKNOWN_EC, 1,
- &si->erase);
- case UBI_IO_BAD_HDR_EBADMSG:
- case UBI_IO_BAD_HDR:
- /*
- * We have to also look at the VID header, possibly it is not
- * corrupted. Set %bitflips flag in order to make this PEB be
- * moved and EC be re-created.
- */
- ec_err = err;
- ec = UBI_SCAN_UNKNOWN_EC;
- bitflips = 1;
- break;
- default:
- ubi_err("'ubi_io_read_ec_hdr()' returned unknown code %d", err);
- return -EINVAL;
- }
-
- if (!ec_err) {
- int image_seq;
-
- /* Make sure UBI version is OK */
- if (ech->version != UBI_VERSION) {
- ubi_err("this UBI version is %d, image version is %d",
- UBI_VERSION, (int)ech->version);
- return -EINVAL;
- }
-
- ec = be64_to_cpu(ech->ec);
- if (ec > UBI_MAX_ERASECOUNTER) {
- /*
- * Erase counter overflow. The EC headers have 64 bits
- * reserved, but we anyway make use of only 31 bit
- * values, as this seems to be enough for any existing
- * flash. Upgrade UBI and use 64-bit erase counters
- * internally.
- */
- ubi_err("erase counter overflow, max is %d",
- UBI_MAX_ERASECOUNTER);
- ubi_dbg_dump_ec_hdr(ech);
- return -EINVAL;
- }
-
- /*
- * Make sure that all PEBs have the same image sequence number.
- * This allows us to detect situations when users flash UBI
- * images incorrectly, so that the flash has the new UBI image
- * and leftovers from the old one. This feature was added
- * relatively recently, and the sequence number was always
- * zero, because old UBI implementations always set it to zero.
- * For this reasons, we do not panic if some PEBs have zero
- * sequence number, while other PEBs have non-zero sequence
- * number.
- */
- image_seq = be32_to_cpu(ech->image_seq);
- if (!ubi->image_seq && image_seq)
- ubi->image_seq = image_seq;
- if (ubi->image_seq && image_seq &&
- ubi->image_seq != image_seq) {
- ubi_err("bad image sequence number %d in PEB %d, "
- "expected %d", image_seq, pnum, ubi->image_seq);
- ubi_dbg_dump_ec_hdr(ech);
- return -EINVAL;
- }
- }
-
- /* OK, we've done with the EC header, let's look at the VID header */
-
- err = ubi_io_read_vid_hdr(ubi, pnum, vidh, 0);
- if (err < 0)
- return err;
- switch (err) {
- case 0:
- break;
- case UBI_IO_BITFLIPS:
- bitflips = 1;
- break;
- case UBI_IO_BAD_HDR_EBADMSG:
- if (ec_err == UBI_IO_BAD_HDR_EBADMSG)
- /*
- * Both EC and VID headers are corrupted and were read
- * with data integrity error, probably this is a bad
- * PEB, bit it is not marked as bad yet. This may also
- * be a result of power cut during erasure.
- */
- si->maybe_bad_peb_count += 1;
- case UBI_IO_BAD_HDR:
- if (ec_err)
- /*
- * Both headers are corrupted. There is a possibility
- * that this a valid UBI PEB which has corresponding
- * LEB, but the headers are corrupted. However, it is
- * impossible to distinguish it from a PEB which just
- * contains garbage because of a power cut during erase
- * operation. So we just schedule this PEB for erasure.
- *
- * Besides, in case of NOR flash, we deliberately
- * corrupt both headers because NOR flash erasure is
- * slow and can start from the end.
- */
- err = 0;
- else
- /*
- * The EC was OK, but the VID header is corrupted. We
- * have to check what is in the data area.
- */
- err = check_corruption(ubi, vidh, pnum);
-
- if (err < 0)
- return err;
- else if (!err)
- /* This corruption is caused by a power cut */
- err = add_to_list(si, pnum, ec, 1, &si->erase);
- else
- /* This is an unexpected corruption */
- err = add_corrupted(si, pnum, ec);
- if (err)
- return err;
- goto adjust_mean_ec;
- case UBI_IO_FF_BITFLIPS:
- err = add_to_list(si, pnum, ec, 1, &si->erase);
- if (err)
- return err;
- goto adjust_mean_ec;
- case UBI_IO_FF:
- if (ec_err)
- err = add_to_list(si, pnum, ec, 1, &si->erase);
- else
- err = add_to_list(si, pnum, ec, 0, &si->free);
- if (err)
- return err;
- goto adjust_mean_ec;
- default:
- ubi_err("'ubi_io_read_vid_hdr()' returned unknown code %d",
- err);
- return -EINVAL;
- }
-
- vol_id = be32_to_cpu(vidh->vol_id);
- if (vol_id > UBI_MAX_VOLUMES && vol_id != UBI_LAYOUT_VOLUME_ID) {
- int lnum = be32_to_cpu(vidh->lnum);
-
- /* Unsupported internal volume */
- switch (vidh->compat) {
- case UBI_COMPAT_DELETE:
- ubi_msg("\"delete\" compatible internal volume %d:%d"
- " found, will remove it", vol_id, lnum);
- err = add_to_list(si, pnum, ec, 1, &si->erase);
- if (err)
- return err;
- return 0;
-
- case UBI_COMPAT_RO:
- ubi_msg("read-only compatible internal volume %d:%d"
- " found, switch to read-only mode",
- vol_id, lnum);
- ubi->ro_mode = 1;
- break;
-
- case UBI_COMPAT_PRESERVE:
- ubi_msg("\"preserve\" compatible internal volume %d:%d"
- " found", vol_id, lnum);
- err = add_to_list(si, pnum, ec, 0, &si->alien);
- if (err)
- return err;
- return 0;
-
- case UBI_COMPAT_REJECT:
- ubi_err("incompatible internal volume %d:%d found",
- vol_id, lnum);
- return -EINVAL;
- }
- }
-
- if (ec_err)
- ubi_warn("valid VID header but corrupted EC header at PEB %d",
- pnum);
- err = ubi_scan_add_used(ubi, si, pnum, ec, vidh, bitflips);
- if (err)
- return err;
-
-adjust_mean_ec:
- if (!ec_err) {
- si->ec_sum += ec;
- si->ec_count += 1;
- if (ec > si->max_ec)
- si->max_ec = ec;
- if (ec < si->min_ec)
- si->min_ec = ec;
- }
-
- return 0;
-}
-
-/**
- * check_what_we_have - check what PEB were found by scanning.
- * @ubi: UBI device description object
- * @si: scanning information
- *
- * This is a helper function which takes a look what PEBs were found by
- * scanning, and decides whether the flash is empty and should be formatted and
- * whether there are too many corrupted PEBs and we should not attach this
- * MTD device. Returns zero if we should proceed with attaching the MTD device,
- * and %-EINVAL if we should not.
- */
-static int check_what_we_have(struct ubi_device *ubi, struct ubi_scan_info *si)
-{
- struct ubi_scan_leb *seb;
- int max_corr, peb_count;
-
- peb_count = ubi->peb_count - si->bad_peb_count - si->alien_peb_count;
- max_corr = peb_count / 20 ?: 8;
-
- /*
- * Few corrupted PEBs is not a problem and may be just a result of
- * unclean reboots. However, many of them may indicate some problems
- * with the flash HW or driver.
- */
- if (si->corr_peb_count) {
- ubi_err("%d PEBs are corrupted and preserved",
- si->corr_peb_count);
- printk(KERN_ERR "Corrupted PEBs are:");
- list_for_each_entry(seb, &si->corr, u.list)
- printk(KERN_CONT " %d", seb->pnum);
- printk(KERN_CONT "\n");
-
- /*
- * If too many PEBs are corrupted, we refuse attaching,
- * otherwise, only print a warning.
- */
- if (si->corr_peb_count >= max_corr) {
- ubi_err("too many corrupted PEBs, refusing");
- return -EINVAL;
- }
- }
-
- if (si->empty_peb_count + si->maybe_bad_peb_count == peb_count) {
- /*
- * All PEBs are empty, or almost all - a couple PEBs look like
- * they may be bad PEBs which were not marked as bad yet.
- *
- * This piece of code basically tries to distinguish between
- * the following situations:
- *
- * 1. Flash is empty, but there are few bad PEBs, which are not
- * marked as bad so far, and which were read with error. We
- * want to go ahead and format this flash. While formatting,
- * the faulty PEBs will probably be marked as bad.
- *
- * 2. Flash contains non-UBI data and we do not want to format
- * it and destroy possibly important information.
- */
- if (si->maybe_bad_peb_count <= 2) {
- si->is_empty = 1;
- ubi_msg("empty MTD device detected");
- get_random_bytes(&ubi->image_seq,
- sizeof(ubi->image_seq));
- } else {
- ubi_err("MTD device is not UBI-formatted and possibly "
- "contains non-UBI data - refusing it");
- return -EINVAL;
- }
-
- }
-
- return 0;
-}
-
-/**
- * ubi_scan - scan an MTD device.
- * @ubi: UBI device description object
- *
- * This function does full scanning of an MTD device and returns complete
- * information about it. In case of failure, an error code is returned.
- */
-struct ubi_scan_info *ubi_scan(struct ubi_device *ubi)
-{
- int err, pnum;
- struct rb_node *rb1, *rb2;
- struct ubi_scan_volume *sv;
- struct ubi_scan_leb *seb;
- struct ubi_scan_info *si;
-
- si = kzalloc(sizeof(struct ubi_scan_info), GFP_KERNEL);
- if (!si)
- return ERR_PTR(-ENOMEM);
-
- INIT_LIST_HEAD(&si->corr);
- INIT_LIST_HEAD(&si->free);
- INIT_LIST_HEAD(&si->erase);
- INIT_LIST_HEAD(&si->alien);
- si->volumes = RB_ROOT;
-
- err = -ENOMEM;
- si->scan_leb_slab = kmem_cache_create("ubi_scan_leb_slab",
- sizeof(struct ubi_scan_leb),
- 0, 0, NULL);
- if (!si->scan_leb_slab)
- goto out_si;
-
- ech = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);
- if (!ech)
- goto out_si;
-
- vidh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);
- if (!vidh)
- goto out_ech;
-
- for (pnum = 0; pnum < ubi->peb_count; pnum++) {
- cond_resched();
-
- dbg_gen("process PEB %d", pnum);
- err = process_eb(ubi, si, pnum);
- if (err < 0)
- goto out_vidh;
- }
-
- dbg_msg("scanning is finished");
-
- /* Calculate mean erase counter */
- if (si->ec_count)
- si->mean_ec = div_u64(si->ec_sum, si->ec_count);
-
- err = check_what_we_have(ubi, si);
- if (err)
- goto out_vidh;
-
- /*
- * In case of unknown erase counter we use the mean erase counter
- * value.
- */
- ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb) {
- ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb)
- if (seb->ec == UBI_SCAN_UNKNOWN_EC)
- seb->ec = si->mean_ec;
- }
-
- list_for_each_entry(seb, &si->free, u.list) {
- if (seb->ec == UBI_SCAN_UNKNOWN_EC)
- seb->ec = si->mean_ec;
- }
-
- list_for_each_entry(seb, &si->corr, u.list)
- if (seb->ec == UBI_SCAN_UNKNOWN_EC)
- seb->ec = si->mean_ec;
-
- list_for_each_entry(seb, &si->erase, u.list)
- if (seb->ec == UBI_SCAN_UNKNOWN_EC)
- seb->ec = si->mean_ec;
-
- err = paranoid_check_si(ubi, si);
- if (err)
- goto out_vidh;
-
- ubi_free_vid_hdr(ubi, vidh);
- kfree(ech);
-
- return si;
-
-out_vidh:
- ubi_free_vid_hdr(ubi, vidh);
-out_ech:
- kfree(ech);
-out_si:
- ubi_scan_destroy_si(si);
- return ERR_PTR(err);
-}
-
-/**
- * destroy_sv - free the scanning volume information
- * @sv: scanning volume information
- * @si: scanning information
- *
- * This function destroys the volume RB-tree (@sv->root) and the scanning
- * volume information.
- */
-static void destroy_sv(struct ubi_scan_info *si, struct ubi_scan_volume *sv)
-{
- struct ubi_scan_leb *seb;
- struct rb_node *this = sv->root.rb_node;
-
- while (this) {
- if (this->rb_left)
- this = this->rb_left;
- else if (this->rb_right)
- this = this->rb_right;
- else {
- seb = rb_entry(this, struct ubi_scan_leb, u.rb);
- this = rb_parent(this);
- if (this) {
- if (this->rb_left == &seb->u.rb)
- this->rb_left = NULL;
- else
- this->rb_right = NULL;
- }
-
- kmem_cache_free(si->scan_leb_slab, seb);
- }
- }
- kfree(sv);
-}
-
-/**
- * ubi_scan_destroy_si - destroy scanning information.
- * @si: scanning information
- */
-void ubi_scan_destroy_si(struct ubi_scan_info *si)
-{
- struct ubi_scan_leb *seb, *seb_tmp;
- struct ubi_scan_volume *sv;
- struct rb_node *rb;
-
- list_for_each_entry_safe(seb, seb_tmp, &si->alien, u.list) {
- list_del(&seb->u.list);
- kmem_cache_free(si->scan_leb_slab, seb);
- }
- list_for_each_entry_safe(seb, seb_tmp, &si->erase, u.list) {
- list_del(&seb->u.list);
- kmem_cache_free(si->scan_leb_slab, seb);
- }
- list_for_each_entry_safe(seb, seb_tmp, &si->corr, u.list) {
- list_del(&seb->u.list);
- kmem_cache_free(si->scan_leb_slab, seb);
- }
- list_for_each_entry_safe(seb, seb_tmp, &si->free, u.list) {
- list_del(&seb->u.list);
- kmem_cache_free(si->scan_leb_slab, seb);
- }
-
- /* Destroy the volume RB-tree */
- rb = si->volumes.rb_node;
- while (rb) {
- if (rb->rb_left)
- rb = rb->rb_left;
- else if (rb->rb_right)
- rb = rb->rb_right;
- else {
- sv = rb_entry(rb, struct ubi_scan_volume, rb);
-
- rb = rb_parent(rb);
- if (rb) {
- if (rb->rb_left == &sv->rb)
- rb->rb_left = NULL;
- else
- rb->rb_right = NULL;
- }
-
- destroy_sv(si, sv);
- }
- }
-
- if (si->scan_leb_slab)
- kmem_cache_destroy(si->scan_leb_slab);
-
- kfree(si);
-}
-
-#ifdef CONFIG_MTD_UBI_DEBUG
-
-/**
- * paranoid_check_si - check the scanning information.
- * @ubi: UBI device description object
- * @si: scanning information
- *
- * This function returns zero if the scanning information is all right, and a
- * negative error code if not or if an error occurred.
- */
-static int paranoid_check_si(struct ubi_device *ubi, struct ubi_scan_info *si)
-{
- int pnum, err, vols_found = 0;
- struct rb_node *rb1, *rb2;
- struct ubi_scan_volume *sv;
- struct ubi_scan_leb *seb, *last_seb;
- uint8_t *buf;
-
- if (!ubi->dbg->chk_gen)
- return 0;
-
- /*
- * At first, check that scanning information is OK.
- */
- ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb) {
- int leb_count = 0;
-
- cond_resched();
-
- vols_found += 1;
-
- if (si->is_empty) {
- ubi_err("bad is_empty flag");
- goto bad_sv;
- }
-
- if (sv->vol_id < 0 || sv->highest_lnum < 0 ||
- sv->leb_count < 0 || sv->vol_type < 0 || sv->used_ebs < 0 ||
- sv->data_pad < 0 || sv->last_data_size < 0) {
- ubi_err("negative values");
- goto bad_sv;
- }
-
- if (sv->vol_id >= UBI_MAX_VOLUMES &&
- sv->vol_id < UBI_INTERNAL_VOL_START) {
- ubi_err("bad vol_id");
- goto bad_sv;
- }
-
- if (sv->vol_id > si->highest_vol_id) {
- ubi_err("highest_vol_id is %d, but vol_id %d is there",
- si->highest_vol_id, sv->vol_id);
- goto out;
- }
-
- if (sv->vol_type != UBI_DYNAMIC_VOLUME &&
- sv->vol_type != UBI_STATIC_VOLUME) {
- ubi_err("bad vol_type");
- goto bad_sv;
- }
-
- if (sv->data_pad > ubi->leb_size / 2) {
- ubi_err("bad data_pad");
- goto bad_sv;
- }
-
- last_seb = NULL;
- ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb) {
- cond_resched();
-
- last_seb = seb;
- leb_count += 1;
-
- if (seb->pnum < 0 || seb->ec < 0) {
- ubi_err("negative values");
- goto bad_seb;
- }
-
- if (seb->ec < si->min_ec) {
- ubi_err("bad si->min_ec (%d), %d found",
- si->min_ec, seb->ec);
- goto bad_seb;
- }
-
- if (seb->ec > si->max_ec) {
- ubi_err("bad si->max_ec (%d), %d found",
- si->max_ec, seb->ec);
- goto bad_seb;
- }
-
- if (seb->pnum >= ubi->peb_count) {
- ubi_err("too high PEB number %d, total PEBs %d",
- seb->pnum, ubi->peb_count);
- goto bad_seb;
- }
-
- if (sv->vol_type == UBI_STATIC_VOLUME) {
- if (seb->lnum >= sv->used_ebs) {
- ubi_err("bad lnum or used_ebs");
- goto bad_seb;
- }
- } else {
- if (sv->used_ebs != 0) {
- ubi_err("non-zero used_ebs");
- goto bad_seb;
- }
- }
-
- if (seb->lnum > sv->highest_lnum) {
- ubi_err("incorrect highest_lnum or lnum");
- goto bad_seb;
- }
- }
-
- if (sv->leb_count != leb_count) {
- ubi_err("bad leb_count, %d objects in the tree",
- leb_count);
- goto bad_sv;
- }
-
- if (!last_seb)
- continue;
-
- seb = last_seb;
-
- if (seb->lnum != sv->highest_lnum) {
- ubi_err("bad highest_lnum");
- goto bad_seb;
- }
- }
-
- if (vols_found != si->vols_found) {
- ubi_err("bad si->vols_found %d, should be %d",
- si->vols_found, vols_found);
- goto out;
- }
-
- /* Check that scanning information is correct */
- ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb) {
- last_seb = NULL;
- ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb) {
- int vol_type;
-
- cond_resched();
-
- last_seb = seb;
-
- err = ubi_io_read_vid_hdr(ubi, seb->pnum, vidh, 1);
- if (err && err != UBI_IO_BITFLIPS) {
- ubi_err("VID header is not OK (%d)", err);
- if (err > 0)
- err = -EIO;
- return err;
- }
-
- vol_type = vidh->vol_type == UBI_VID_DYNAMIC ?
- UBI_DYNAMIC_VOLUME : UBI_STATIC_VOLUME;
- if (sv->vol_type != vol_type) {
- ubi_err("bad vol_type");
- goto bad_vid_hdr;
- }
-
- if (seb->sqnum != be64_to_cpu(vidh->sqnum)) {
- ubi_err("bad sqnum %llu", seb->sqnum);
- goto bad_vid_hdr;
- }
-
- if (sv->vol_id != be32_to_cpu(vidh->vol_id)) {
- ubi_err("bad vol_id %d", sv->vol_id);
- goto bad_vid_hdr;
- }
-
- if (sv->compat != vidh->compat) {
- ubi_err("bad compat %d", vidh->compat);
- goto bad_vid_hdr;
- }
-
- if (seb->lnum != be32_to_cpu(vidh->lnum)) {
- ubi_err("bad lnum %d", seb->lnum);
- goto bad_vid_hdr;
- }
-
- if (sv->used_ebs != be32_to_cpu(vidh->used_ebs)) {
- ubi_err("bad used_ebs %d", sv->used_ebs);
- goto bad_vid_hdr;
- }
-
- if (sv->data_pad != be32_to_cpu(vidh->data_pad)) {
- ubi_err("bad data_pad %d", sv->data_pad);
- goto bad_vid_hdr;
- }
- }
-
- if (!last_seb)
- continue;
-
- if (sv->highest_lnum != be32_to_cpu(vidh->lnum)) {
- ubi_err("bad highest_lnum %d", sv->highest_lnum);
- goto bad_vid_hdr;
- }
-
- if (sv->last_data_size != be32_to_cpu(vidh->data_size)) {
- ubi_err("bad last_data_size %d", sv->last_data_size);
- goto bad_vid_hdr;
- }
- }
-
- /*
- * Make sure that all the physical eraseblocks are in one of the lists
- * or trees.
- */
- buf = kzalloc(ubi->peb_count, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
-
- for (pnum = 0; pnum < ubi->peb_count; pnum++) {
- err = ubi_io_is_bad(ubi, pnum);
- if (err < 0) {
- kfree(buf);
- return err;
- } else if (err)
- buf[pnum] = 1;
- }
-
- ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb)
- ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb)
- buf[seb->pnum] = 1;
-
- list_for_each_entry(seb, &si->free, u.list)
- buf[seb->pnum] = 1;
-
- list_for_each_entry(seb, &si->corr, u.list)
- buf[seb->pnum] = 1;
-
- list_for_each_entry(seb, &si->erase, u.list)
- buf[seb->pnum] = 1;
-
- list_for_each_entry(seb, &si->alien, u.list)
- buf[seb->pnum] = 1;
-
- err = 0;
- for (pnum = 0; pnum < ubi->peb_count; pnum++)
- if (!buf[pnum]) {
- ubi_err("PEB %d is not referred", pnum);
- err = 1;
- }
-
- kfree(buf);
- if (err)
- goto out;
- return 0;
-
-bad_seb:
- ubi_err("bad scanning information about LEB %d", seb->lnum);
- ubi_dbg_dump_seb(seb, 0);
- ubi_dbg_dump_sv(sv);
- goto out;
-
-bad_sv:
- ubi_err("bad scanning information about volume %d", sv->vol_id);
- ubi_dbg_dump_sv(sv);
- goto out;
-
-bad_vid_hdr:
- ubi_err("bad scanning information about volume %d", sv->vol_id);
- ubi_dbg_dump_sv(sv);
- ubi_dbg_dump_vid_hdr(vidh);
-
-out:
- ubi_dbg_dump_stack();
- return -EINVAL;
-}
-
-#endif /* CONFIG_MTD_UBI_DEBUG */
diff --git a/drivers/mtd/ubi/scan.h b/drivers/mtd/ubi/scan.h
deleted file mode 100644
index d48aef1..0000000
--- a/drivers/mtd/ubi/scan.h
+++ /dev/null
@@ -1,174 +0,0 @@
-/*
- * Copyright (c) International Business Machines Corp., 2006
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Author: Artem Bityutskiy (Битюцкий Артём)
- */
-
-#ifndef __UBI_SCAN_H__
-#define __UBI_SCAN_H__
-
-/* The erase counter value for this physical eraseblock is unknown */
-#define UBI_SCAN_UNKNOWN_EC (-1)
-
-/**
- * struct ubi_scan_leb - scanning information about a physical eraseblock.
- * @ec: erase counter (%UBI_SCAN_UNKNOWN_EC if it is unknown)
- * @pnum: physical eraseblock number
- * @lnum: logical eraseblock number
- * @scrub: if this physical eraseblock needs scrubbing
- * @copy_flag: this LEB is a copy (@copy_flag is set in VID header of this LEB)
- * @sqnum: sequence number
- * @u: unions RB-tree or @list links
- * @u.rb: link in the per-volume RB-tree of &struct ubi_scan_leb objects
- * @u.list: link in one of the eraseblock lists
- *
- * One object of this type is allocated for each physical eraseblock during
- * scanning.
- */
-struct ubi_scan_leb {
- int ec;
- int pnum;
- int lnum;
- unsigned int scrub:1;
- unsigned int copy_flag:1;
- unsigned long long sqnum;
- union {
- struct rb_node rb;
- struct list_head list;
- } u;
-};
-
-/**
- * struct ubi_scan_volume - scanning information about a volume.
- * @vol_id: volume ID
- * @highest_lnum: highest logical eraseblock number in this volume
- * @leb_count: number of logical eraseblocks in this volume
- * @vol_type: volume type
- * @used_ebs: number of used logical eraseblocks in this volume (only for
- * static volumes)
- * @last_data_size: amount of data in the last logical eraseblock of this
- * volume (always equivalent to the usable logical eraseblock
- * size in case of dynamic volumes)
- * @data_pad: how many bytes at the end of logical eraseblocks of this volume
- * are not used (due to volume alignment)
- * @compat: compatibility flags of this volume
- * @rb: link in the volume RB-tree
- * @root: root of the RB-tree containing all the eraseblock belonging to this
- * volume (&struct ubi_scan_leb objects)
- *
- * One object of this type is allocated for each volume during scanning.
- */
-struct ubi_scan_volume {
- int vol_id;
- int highest_lnum;
- int leb_count;
- int vol_type;
- int used_ebs;
- int last_data_size;
- int data_pad;
- int compat;
- struct rb_node rb;
- struct rb_root root;
-};
-
-/**
- * struct ubi_scan_info - UBI scanning information.
- * @volumes: root of the volume RB-tree
- * @corr: list of corrupted physical eraseblocks
- * @free: list of free physical eraseblocks
- * @erase: list of physical eraseblocks which have to be erased
- * @alien: list of physical eraseblocks which should not be used by UBI (e.g.,
- * those belonging to "preserve"-compatible internal volumes)
- * @corr_peb_count: count of PEBs in the @corr list
- * @empty_peb_count: count of PEBs which are presumably empty (contain only
- * 0xFF bytes)
- * @alien_peb_count: count of PEBs in the @alien list
- * @bad_peb_count: count of bad physical eraseblocks
- * @maybe_bad_peb_count: count of bad physical eraseblocks which are not marked
- * as bad yet, but which look like bad
- * @vols_found: number of volumes found during scanning
- * @highest_vol_id: highest volume ID
- * @is_empty: flag indicating whether the MTD device is empty or not
- * @min_ec: lowest erase counter value
- * @max_ec: highest erase counter value
- * @max_sqnum: highest sequence number value
- * @mean_ec: mean erase counter value
- * @ec_sum: a temporary variable used when calculating @mean_ec
- * @ec_count: a temporary variable used when calculating @mean_ec
- * @scan_leb_slab: slab cache for &struct ubi_scan_leb objects
- *
- * This data structure contains the result of scanning and may be used by other
- * UBI sub-systems to build final UBI data structures, further error-recovery
- * and so on.
- */
-struct ubi_scan_info {
- struct rb_root volumes;
- struct list_head corr;
- struct list_head free;
- struct list_head erase;
- struct list_head alien;
- int corr_peb_count;
- int empty_peb_count;
- int alien_peb_count;
- int bad_peb_count;
- int maybe_bad_peb_count;
- int vols_found;
- int highest_vol_id;
- int is_empty;
- int min_ec;
- int max_ec;
- unsigned long long max_sqnum;
- int mean_ec;
- uint64_t ec_sum;
- int ec_count;
- struct kmem_cache *scan_leb_slab;
-};
-
-struct ubi_device;
-struct ubi_vid_hdr;
-
-/*
- * ubi_scan_move_to_list - move a PEB from the volume tree to a list.
- *
- * @sv: volume scanning information
- * @seb: scanning eraseblock information
- * @list: the list to move to
- */
-static inline void ubi_scan_move_to_list(struct ubi_scan_volume *sv,
- struct ubi_scan_leb *seb,
- struct list_head *list)
-{
- rb_erase(&seb->u.rb, &sv->root);
- list_add_tail(&seb->u.list, list);
-}
-
-int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
- int pnum, int ec, const struct ubi_vid_hdr *vid_hdr,
- int bitflips);
-struct ubi_scan_volume *ubi_scan_find_sv(const struct ubi_scan_info *si,
- int vol_id);
-struct ubi_scan_leb *ubi_scan_find_seb(const struct ubi_scan_volume *sv,
- int lnum);
-void ubi_scan_rm_volume(struct ubi_scan_info *si, struct ubi_scan_volume *sv);
-struct ubi_scan_leb *ubi_scan_get_free_peb(struct ubi_device *ubi,
- struct ubi_scan_info *si);
-int ubi_scan_erase_peb(struct ubi_device *ubi, const struct ubi_scan_info *si,
- int pnum, int ec);
-struct ubi_scan_info *ubi_scan(struct ubi_device *ubi);
-void ubi_scan_destroy_si(struct ubi_scan_info *si);
-
-#endif /* !__UBI_SCAN_H__ */
diff --git a/drivers/mtd/ubi/ubi-media.h b/drivers/mtd/ubi/ubi-media.h
index 6fb8ec2..468ffbc 100644
--- a/drivers/mtd/ubi/ubi-media.h
+++ b/drivers/mtd/ubi/ubi-media.h
@@ -149,10 +149,10 @@
* The @image_seq field is used to validate a UBI image that has been prepared
* for a UBI device. The @image_seq value can be any value, but it must be the
* same on all eraseblocks. UBI will ensure that all new erase counter headers
- * also contain this value, and will check the value when scanning at start-up.
+ * also contain this value, and will check the value when attaching the flash.
* One way to make use of @image_seq is to increase its value by one every time
* an image is flashed over an existing image, then, if the flashing does not
- * complete, UBI will detect the error when scanning.
+ * complete, UBI will detect the error when attaching the media.
*/
struct ubi_ec_hdr {
__be32 magic;
@@ -298,8 +298,8 @@
#define UBI_INT_VOL_COUNT 1
/*
- * Starting ID of internal volumes. There is reserved room for 4096 internal
- * volumes.
+ * Starting ID of internal volumes: 0x7fffefff.
+ * There is reserved room for 4096 internal volumes.
*/
#define UBI_INTERNAL_VOL_START (0x7FFFFFFF - 4096)
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index b162790..a1a81c9 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -43,7 +43,6 @@
#include <asm/pgtable.h>
#include "ubi-media.h"
-#include "scan.h"
/* Maximum number of supported UBI devices */
#define UBI_MAX_DEVICES 32
@@ -66,7 +65,10 @@
/* Background thread name pattern */
#define UBI_BGT_NAME_PATTERN "ubi_bgt%dd"
-/* This marker in the EBA table means that the LEB is um-mapped */
+/*
+ * This marker in the EBA table means that the LEB is um-mapped.
+ * NOTE! It has to have the same value as %UBI_ALL.
+ */
#define UBI_LEB_UNMAPPED -1
/*
@@ -82,6 +84,9 @@
*/
#define UBI_PROT_QUEUE_LEN 10
+/* The volume ID/LEB number/erase counter is unknown */
+#define UBI_UNKNOWN -1
+
/*
* Error codes returned by the I/O sub-system.
*
@@ -222,8 +227,6 @@
* @upd_ebs: how many eraseblocks are expected to be updated
* @ch_lnum: LEB number which is being changing by the atomic LEB change
* operation
- * @ch_dtype: data persistency type which is being changing by the atomic LEB
- * change operation
* @upd_bytes: how many bytes are expected to be received for volume update or
* atomic LEB change
* @upd_received: how many bytes were already received for volume update or
@@ -270,7 +273,6 @@
int upd_ebs;
int ch_lnum;
- int ch_dtype;
long long upd_bytes;
long long upd_received;
void *upd_buf;
@@ -477,6 +479,124 @@
struct ubi_debug_info *dbg;
};
+/**
+ * struct ubi_ainf_peb - attach information about a physical eraseblock.
+ * @ec: erase counter (%UBI_UNKNOWN if it is unknown)
+ * @pnum: physical eraseblock number
+ * @vol_id: ID of the volume this LEB belongs to
+ * @lnum: logical eraseblock number
+ * @scrub: if this physical eraseblock needs scrubbing
+ * @copy_flag: this LEB is a copy (@copy_flag is set in VID header of this LEB)
+ * @sqnum: sequence number
+ * @u: unions RB-tree or @list links
+ * @u.rb: link in the per-volume RB-tree of &struct ubi_ainf_peb objects
+ * @u.list: link in one of the eraseblock lists
+ *
+ * One object of this type is allocated for each physical eraseblock when
+ * attaching an MTD device. Note, if this PEB does not belong to any LEB /
+ * volume, the @vol_id and @lnum fields are initialized to %UBI_UNKNOWN.
+ */
+struct ubi_ainf_peb {
+ int ec;
+ int pnum;
+ int vol_id;
+ int lnum;
+ unsigned int scrub:1;
+ unsigned int copy_flag:1;
+ unsigned long long sqnum;
+ union {
+ struct rb_node rb;
+ struct list_head list;
+ } u;
+};
+
+/**
+ * struct ubi_ainf_volume - attaching information about a volume.
+ * @vol_id: volume ID
+ * @highest_lnum: highest logical eraseblock number in this volume
+ * @leb_count: number of logical eraseblocks in this volume
+ * @vol_type: volume type
+ * @used_ebs: number of used logical eraseblocks in this volume (only for
+ * static volumes)
+ * @last_data_size: amount of data in the last logical eraseblock of this
+ * volume (always equivalent to the usable logical eraseblock
+ * size in case of dynamic volumes)
+ * @data_pad: how many bytes at the end of logical eraseblocks of this volume
+ * are not used (due to volume alignment)
+ * @compat: compatibility flags of this volume
+ * @rb: link in the volume RB-tree
+ * @root: root of the RB-tree containing all the eraseblock belonging to this
+ * volume (&struct ubi_ainf_peb objects)
+ *
+ * One object of this type is allocated for each volume when attaching an MTD
+ * device.
+ */
+struct ubi_ainf_volume {
+ int vol_id;
+ int highest_lnum;
+ int leb_count;
+ int vol_type;
+ int used_ebs;
+ int last_data_size;
+ int data_pad;
+ int compat;
+ struct rb_node rb;
+ struct rb_root root;
+};
+
+/**
+ * struct ubi_attach_info - MTD device attaching information.
+ * @volumes: root of the volume RB-tree
+ * @corr: list of corrupted physical eraseblocks
+ * @free: list of free physical eraseblocks
+ * @erase: list of physical eraseblocks which have to be erased
+ * @alien: list of physical eraseblocks which should not be used by UBI (e.g.,
+ * those belonging to "preserve"-compatible internal volumes)
+ * @corr_peb_count: count of PEBs in the @corr list
+ * @empty_peb_count: count of PEBs which are presumably empty (contain only
+ * 0xFF bytes)
+ * @alien_peb_count: count of PEBs in the @alien list
+ * @bad_peb_count: count of bad physical eraseblocks
+ * @maybe_bad_peb_count: count of bad physical eraseblocks which are not marked
+ * as bad yet, but which look like bad
+ * @vols_found: number of volumes found
+ * @highest_vol_id: highest volume ID
+ * @is_empty: flag indicating whether the MTD device is empty or not
+ * @min_ec: lowest erase counter value
+ * @max_ec: highest erase counter value
+ * @max_sqnum: highest sequence number value
+ * @mean_ec: mean erase counter value
+ * @ec_sum: a temporary variable used when calculating @mean_ec
+ * @ec_count: a temporary variable used when calculating @mean_ec
+ * @aeb_slab_cache: slab cache for &struct ubi_ainf_peb objects
+ *
+ * This data structure contains the result of attaching an MTD device and may
+ * be used by other UBI sub-systems to build final UBI data structures, further
+ * error-recovery and so on.
+ */
+struct ubi_attach_info {
+ struct rb_root volumes;
+ struct list_head corr;
+ struct list_head free;
+ struct list_head erase;
+ struct list_head alien;
+ int corr_peb_count;
+ int empty_peb_count;
+ int alien_peb_count;
+ int bad_peb_count;
+ int maybe_bad_peb_count;
+ int vols_found;
+ int highest_vol_id;
+ int is_empty;
+ int min_ec;
+ int max_ec;
+ unsigned long long max_sqnum;
+ int mean_ec;
+ uint64_t ec_sum;
+ int ec_count;
+ struct kmem_cache *aeb_slab_cache;
+};
+
#include "debug.h"
extern struct kmem_cache *ubi_wl_entry_slab;
@@ -487,12 +607,23 @@
extern struct mutex ubi_devices_mutex;
extern struct blocking_notifier_head ubi_notifiers;
+/* scan.c */
+int ubi_add_to_av(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum,
+ int ec, const struct ubi_vid_hdr *vid_hdr, int bitflips);
+struct ubi_ainf_volume *ubi_find_av(const struct ubi_attach_info *ai,
+ int vol_id);
+void ubi_remove_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av);
+struct ubi_ainf_peb *ubi_early_get_peb(struct ubi_device *ubi,
+ struct ubi_attach_info *ai);
+int ubi_attach(struct ubi_device *ubi);
+void ubi_destroy_ai(struct ubi_attach_info *ai);
+
/* vtbl.c */
int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
struct ubi_vtbl_record *vtbl_rec);
int ubi_vtbl_rename_volumes(struct ubi_device *ubi,
struct list_head *rename_list);
-int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si);
+int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_attach_info *ai);
/* vmt.c */
int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req);
@@ -525,22 +656,22 @@
int ubi_eba_read_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
void *buf, int offset, int len, int check);
int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
- const void *buf, int offset, int len, int dtype);
+ const void *buf, int offset, int len);
int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol,
- int lnum, const void *buf, int len, int dtype,
- int used_ebs);
+ int lnum, const void *buf, int len, int used_ebs);
int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
- int lnum, const void *buf, int len, int dtype);
+ int lnum, const void *buf, int len);
int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
struct ubi_vid_hdr *vid_hdr);
-int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si);
+int ubi_eba_init(struct ubi_device *ubi, struct ubi_attach_info *ai);
/* wl.c */
-int ubi_wl_get_peb(struct ubi_device *ubi, int dtype);
-int ubi_wl_put_peb(struct ubi_device *ubi, int pnum, int torture);
-int ubi_wl_flush(struct ubi_device *ubi);
+int ubi_wl_get_peb(struct ubi_device *ubi);
+int ubi_wl_put_peb(struct ubi_device *ubi, int vol_id, int lnum,
+ int pnum, int torture);
+int ubi_wl_flush(struct ubi_device *ubi, int vol_id, int lnum);
int ubi_wl_scrub_peb(struct ubi_device *ubi, int pnum);
-int ubi_wl_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si);
+int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai);
void ubi_wl_close(struct ubi_device *ubi);
int ubi_thread(void *u);
@@ -573,6 +704,7 @@
int ubi_notify_all(struct ubi_device *ubi, int ntype,
struct notifier_block *nb);
int ubi_enumerate_volumes(struct notifier_block *nb);
+void ubi_free_internal_volumes(struct ubi_device *ubi);
/* kapi.c */
void ubi_do_get_device_info(struct ubi_device *ubi, struct ubi_device_info *di);
@@ -593,6 +725,21 @@
rb = rb_next(rb), \
pos = (rb ? container_of(rb, typeof(*pos), member) : NULL))
+/*
+ * ubi_move_aeb_to_list - move a PEB from the volume tree to a list.
+ *
+ * @av: volume attaching information
+ * @aeb: attaching eraseblock information
+ * @list: the list to move to
+ */
+static inline void ubi_move_aeb_to_list(struct ubi_ainf_volume *av,
+ struct ubi_ainf_peb *aeb,
+ struct list_head *list)
+{
+ rb_erase(&aeb->u.rb, &av->root);
+ list_add_tail(&aeb->u.list, list);
+}
+
/**
* ubi_zalloc_vid_hdr - allocate a volume identifier header object.
* @ubi: UBI device description object
@@ -667,7 +814,7 @@
if (!ubi->ro_mode) {
ubi->ro_mode = 1;
ubi_warn("switch to read-only mode");
- ubi_dbg_dump_stack();
+ dump_stack();
}
}
diff --git a/drivers/mtd/ubi/upd.c b/drivers/mtd/ubi/upd.c
index 425bf5a..9f2ebd8 100644
--- a/drivers/mtd/ubi/upd.c
+++ b/drivers/mtd/ubi/upd.c
@@ -147,7 +147,7 @@
}
if (bytes == 0) {
- err = ubi_wl_flush(ubi);
+ err = ubi_wl_flush(ubi, UBI_ALL, UBI_ALL);
if (err)
return err;
@@ -186,14 +186,12 @@
dbg_gen("start changing LEB %d:%d, %u bytes",
vol->vol_id, req->lnum, req->bytes);
if (req->bytes == 0)
- return ubi_eba_atomic_leb_change(ubi, vol, req->lnum, NULL, 0,
- req->dtype);
+ return ubi_eba_atomic_leb_change(ubi, vol, req->lnum, NULL, 0);
vol->upd_bytes = req->bytes;
vol->upd_received = 0;
vol->changing_leb = 1;
vol->ch_lnum = req->lnum;
- vol->ch_dtype = req->dtype;
vol->upd_buf = vmalloc(req->bytes);
if (!vol->upd_buf)
@@ -246,8 +244,7 @@
return 0;
}
- err = ubi_eba_write_leb(ubi, vol, lnum, buf, 0, len,
- UBI_UNKNOWN);
+ err = ubi_eba_write_leb(ubi, vol, lnum, buf, 0, len);
} else {
/*
* When writing static volume, and this is the last logical
@@ -259,8 +256,7 @@
* contain zeros, not random trash.
*/
memset(buf + len, 0, vol->usable_leb_size - len);
- err = ubi_eba_write_leb_st(ubi, vol, lnum, buf, len,
- UBI_UNKNOWN, used_ebs);
+ err = ubi_eba_write_leb_st(ubi, vol, lnum, buf, len, used_ebs);
}
return err;
@@ -365,7 +361,7 @@
ubi_assert(vol->upd_received <= vol->upd_bytes);
if (vol->upd_received == vol->upd_bytes) {
- err = ubi_wl_flush(ubi);
+ err = ubi_wl_flush(ubi, UBI_ALL, UBI_ALL);
if (err)
return err;
/* The update is finished, clear the update marker */
@@ -421,7 +417,7 @@
len - vol->upd_bytes);
len = ubi_calc_data_len(ubi, vol->upd_buf, len);
err = ubi_eba_atomic_leb_change(ubi, vol, vol->ch_lnum,
- vol->upd_buf, len, UBI_UNKNOWN);
+ vol->upd_buf, len);
if (err)
return err;
}
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 863835f..0669cff 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -29,11 +29,7 @@
#include <linux/export.h>
#include "ubi.h"
-#ifdef CONFIG_MTD_UBI_DEBUG
-static int paranoid_check_volumes(struct ubi_device *ubi);
-#else
-#define paranoid_check_volumes(ubi) 0
-#endif
+static int self_check_volumes(struct ubi_device *ubi);
static ssize_t vol_attribute_show(struct device *dev,
struct device_attribute *attr, char *buf);
@@ -227,7 +223,7 @@
}
if (vol_id == UBI_VOL_NUM_AUTO) {
- dbg_err("out of volume IDs");
+ ubi_err("out of volume IDs");
err = -ENFILE;
goto out_unlock;
}
@@ -241,7 +237,7 @@
/* Ensure that this volume does not exist */
err = -EEXIST;
if (ubi->volumes[vol_id]) {
- dbg_err("volume %d already exists", vol_id);
+ ubi_err("volume %d already exists", vol_id);
goto out_unlock;
}
@@ -250,7 +246,7 @@
if (ubi->volumes[i] &&
ubi->volumes[i]->name_len == req->name_len &&
!strcmp(ubi->volumes[i]->name, req->name)) {
- dbg_err("volume \"%s\" exists (ID %d)", req->name, i);
+ ubi_err("volume \"%s\" exists (ID %d)", req->name, i);
goto out_unlock;
}
@@ -261,9 +257,9 @@
/* Reserve physical eraseblocks */
if (vol->reserved_pebs > ubi->avail_pebs) {
- dbg_err("not enough PEBs, only %d available", ubi->avail_pebs);
+ ubi_err("not enough PEBs, only %d available", ubi->avail_pebs);
if (ubi->corr_peb_count)
- dbg_err("%d PEBs are corrupted and not used",
+ ubi_err("%d PEBs are corrupted and not used",
ubi->corr_peb_count);
err = -ENOSPC;
goto out_unlock;
@@ -284,7 +280,7 @@
* Finish all pending erases because there may be some LEBs belonging
* to the same volume ID.
*/
- err = ubi_wl_flush(ubi);
+ err = ubi_wl_flush(ubi, vol_id, UBI_ALL);
if (err)
goto out_acc;
@@ -360,8 +356,7 @@
spin_unlock(&ubi->volumes_lock);
ubi_volume_notify(ubi, vol, UBI_VOLUME_ADDED);
- if (paranoid_check_volumes(ubi))
- dbg_err("check failed while creating volume %d", vol_id);
+ self_check_volumes(ubi);
return err;
out_sysfs:
@@ -461,8 +456,8 @@
spin_unlock(&ubi->volumes_lock);
ubi_volume_notify(ubi, vol, UBI_VOLUME_REMOVED);
- if (!no_vtbl && paranoid_check_volumes(ubi))
- dbg_err("check failed while removing volume %d", vol_id);
+ if (!no_vtbl)
+ self_check_volumes(ubi);
return err;
@@ -500,7 +495,7 @@
if (vol->vol_type == UBI_STATIC_VOLUME &&
reserved_pebs < vol->used_ebs) {
- dbg_err("too small size %d, %d LEBs contain data",
+ ubi_err("too small size %d, %d LEBs contain data",
reserved_pebs, vol->used_ebs);
return -EINVAL;
}
@@ -529,10 +524,10 @@
if (pebs > 0) {
spin_lock(&ubi->volumes_lock);
if (pebs > ubi->avail_pebs) {
- dbg_err("not enough PEBs: requested %d, available %d",
+ ubi_err("not enough PEBs: requested %d, available %d",
pebs, ubi->avail_pebs);
if (ubi->corr_peb_count)
- dbg_err("%d PEBs are corrupted and not used",
+ ubi_err("%d PEBs are corrupted and not used",
ubi->corr_peb_count);
spin_unlock(&ubi->volumes_lock);
err = -ENOSPC;
@@ -588,8 +583,7 @@
}
ubi_volume_notify(ubi, vol, UBI_VOLUME_RESIZED);
- if (paranoid_check_volumes(ubi))
- dbg_err("check failed while re-sizing volume %d", vol_id);
+ self_check_volumes(ubi);
return err;
out_acc:
@@ -638,8 +632,8 @@
}
}
- if (!err && paranoid_check_volumes(ubi))
- ;
+ if (!err)
+ self_check_volumes(ubi);
return err;
}
@@ -686,8 +680,7 @@
return err;
}
- if (paranoid_check_volumes(ubi))
- dbg_err("check failed while adding volume %d", vol_id);
+ self_check_volumes(ubi);
return err;
out_cdev:
@@ -712,16 +705,14 @@
volume_sysfs_close(vol);
}
-#ifdef CONFIG_MTD_UBI_DEBUG
-
/**
- * paranoid_check_volume - check volume information.
+ * self_check_volume - check volume information.
* @ubi: UBI device description object
* @vol_id: volume ID
*
* Returns zero if volume is all right and a a negative error code if not.
*/
-static int paranoid_check_volume(struct ubi_device *ubi, int vol_id)
+static int self_check_volume(struct ubi_device *ubi, int vol_id)
{
int idx = vol_id2idx(ubi, vol_id);
int reserved_pebs, alignment, data_pad, vol_type, name_len, upd_marker;
@@ -771,7 +762,7 @@
}
if (vol->upd_marker && vol->corrupted) {
- dbg_err("update marker and corrupted simultaneously");
+ ubi_err("update marker and corrupted simultaneously");
goto fail;
}
@@ -853,22 +844,22 @@
return 0;
fail:
- ubi_err("paranoid check failed for volume %d", vol_id);
+ ubi_err("self-check failed for volume %d", vol_id);
if (vol)
- ubi_dbg_dump_vol_info(vol);
- ubi_dbg_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id);
+ ubi_dump_vol_info(vol);
+ ubi_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id);
dump_stack();
spin_unlock(&ubi->volumes_lock);
return -EINVAL;
}
/**
- * paranoid_check_volumes - check information about all volumes.
+ * self_check_volumes - check information about all volumes.
* @ubi: UBI device description object
*
* Returns zero if volumes are all right and a a negative error code if not.
*/
-static int paranoid_check_volumes(struct ubi_device *ubi)
+static int self_check_volumes(struct ubi_device *ubi)
{
int i, err = 0;
@@ -876,11 +867,10 @@
return 0;
for (i = 0; i < ubi->vtbl_slots; i++) {
- err = paranoid_check_volume(ubi, i);
+ err = self_check_volume(ubi, i);
if (err)
break;
}
return err;
}
-#endif
diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
index 17cec0c..437bc19 100644
--- a/drivers/mtd/ubi/vtbl.c
+++ b/drivers/mtd/ubi/vtbl.c
@@ -37,16 +37,15 @@
* LEB 1. This scheme guarantees recoverability from unclean reboots.
*
* In this UBI implementation the on-flash volume table does not contain any
- * information about how many data static volumes contain. This information may
- * be found from the scanning data.
+ * information about how much data static volumes contain.
*
* But it would still be beneficial to store this information in the volume
* table. For example, suppose we have a static volume X, and all its physical
* eraseblocks became bad for some reasons. Suppose we are attaching the
- * corresponding MTD device, the scanning has found no logical eraseblocks
+ * corresponding MTD device, for some reason we find no logical eraseblocks
* corresponding to the volume X. According to the volume table volume X does
* exist. So we don't know whether it is just empty or all its physical
- * eraseblocks went bad. So we cannot alarm the user about this corruption.
+ * eraseblocks went bad. So we cannot alarm the user properly.
*
* The volume table also stores so-called "update marker", which is used for
* volume updates. Before updating the volume, the update marker is set, and
@@ -62,11 +61,7 @@
#include <asm/div64.h>
#include "ubi.h"
-#ifdef CONFIG_MTD_UBI_DEBUG
-static void paranoid_vtbl_check(const struct ubi_device *ubi);
-#else
-#define paranoid_vtbl_check(ubi)
-#endif
+static void self_vtbl_check(const struct ubi_device *ubi);
/* Empty volume table record */
static struct ubi_vtbl_record empty_vtbl_record;
@@ -106,12 +101,12 @@
return err;
err = ubi_eba_write_leb(ubi, layout_vol, i, ubi->vtbl, 0,
- ubi->vtbl_size, UBI_LONGTERM);
+ ubi->vtbl_size);
if (err)
return err;
}
- paranoid_vtbl_check(ubi);
+ self_vtbl_check(ubi);
return 0;
}
@@ -158,7 +153,7 @@
return err;
err = ubi_eba_write_leb(ubi, layout_vol, i, ubi->vtbl, 0,
- ubi->vtbl_size, UBI_LONGTERM);
+ ubi->vtbl_size);
if (err)
return err;
}
@@ -197,7 +192,7 @@
if (be32_to_cpu(vtbl[i].crc) != crc) {
ubi_err("bad CRC at record %u: %#08x, not %#08x",
i, crc, be32_to_cpu(vtbl[i].crc));
- ubi_dbg_dump_vtbl_record(&vtbl[i], i);
+ ubi_dump_vtbl_record(&vtbl[i], i);
return 1;
}
@@ -229,7 +224,7 @@
n = ubi->leb_size % alignment;
if (data_pad != n) {
- dbg_err("bad data_pad, has to be %d", n);
+ ubi_err("bad data_pad, has to be %d", n);
err = 6;
goto bad;
}
@@ -245,7 +240,7 @@
}
if (reserved_pebs > ubi->good_peb_count) {
- dbg_err("too large reserved_pebs %d, good PEBs %d",
+ ubi_err("too large reserved_pebs %d, good PEBs %d",
reserved_pebs, ubi->good_peb_count);
err = 9;
goto bad;
@@ -277,8 +272,8 @@
!strncmp(vtbl[i].name, vtbl[n].name, len1)) {
ubi_err("volumes %d and %d have the same name"
" \"%s\"", i, n, vtbl[i].name);
- ubi_dbg_dump_vtbl_record(&vtbl[i], i);
- ubi_dbg_dump_vtbl_record(&vtbl[n], n);
+ ubi_dump_vtbl_record(&vtbl[i], i);
+ ubi_dump_vtbl_record(&vtbl[n], n);
return -EINVAL;
}
}
@@ -288,26 +283,26 @@
bad:
ubi_err("volume table check failed: record %d, error %d", i, err);
- ubi_dbg_dump_vtbl_record(&vtbl[i], i);
+ ubi_dump_vtbl_record(&vtbl[i], i);
return -EINVAL;
}
/**
* create_vtbl - create a copy of volume table.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
* @copy: number of the volume table copy
* @vtbl: contents of the volume table
*
* This function returns zero in case of success and a negative error code in
* case of failure.
*/
-static int create_vtbl(struct ubi_device *ubi, struct ubi_scan_info *si,
+static int create_vtbl(struct ubi_device *ubi, struct ubi_attach_info *ai,
int copy, void *vtbl)
{
int err, tries = 0;
struct ubi_vid_hdr *vid_hdr;
- struct ubi_scan_leb *new_seb;
+ struct ubi_ainf_peb *new_aeb;
ubi_msg("create volume table (copy #%d)", copy + 1);
@@ -316,9 +311,9 @@
return -ENOMEM;
retry:
- new_seb = ubi_scan_get_free_peb(ubi, si);
- if (IS_ERR(new_seb)) {
- err = PTR_ERR(new_seb);
+ new_aeb = ubi_early_get_peb(ubi, ai);
+ if (IS_ERR(new_aeb)) {
+ err = PTR_ERR(new_aeb);
goto out_free;
}
@@ -328,25 +323,24 @@
vid_hdr->data_size = vid_hdr->used_ebs =
vid_hdr->data_pad = cpu_to_be32(0);
vid_hdr->lnum = cpu_to_be32(copy);
- vid_hdr->sqnum = cpu_to_be64(++si->max_sqnum);
+ vid_hdr->sqnum = cpu_to_be64(++ai->max_sqnum);
/* The EC header is already there, write the VID header */
- err = ubi_io_write_vid_hdr(ubi, new_seb->pnum, vid_hdr);
+ err = ubi_io_write_vid_hdr(ubi, new_aeb->pnum, vid_hdr);
if (err)
goto write_error;
/* Write the layout volume contents */
- err = ubi_io_write_data(ubi, vtbl, new_seb->pnum, 0, ubi->vtbl_size);
+ err = ubi_io_write_data(ubi, vtbl, new_aeb->pnum, 0, ubi->vtbl_size);
if (err)
goto write_error;
/*
- * And add it to the scanning information. Don't delete the old version
- * of this LEB as it will be deleted and freed in 'ubi_scan_add_used()'.
+ * And add it to the attaching information. Don't delete the old version
+ * of this LEB as it will be deleted and freed in 'ubi_add_to_av()'.
*/
- err = ubi_scan_add_used(ubi, si, new_seb->pnum, new_seb->ec,
- vid_hdr, 0);
- kfree(new_seb);
+ err = ubi_add_to_av(ubi, ai, new_aeb->pnum, new_aeb->ec, vid_hdr, 0);
+ kfree(new_aeb);
ubi_free_vid_hdr(ubi, vid_hdr);
return err;
@@ -356,10 +350,10 @@
* Probably this physical eraseblock went bad, try to pick
* another one.
*/
- list_add(&new_seb->u.list, &si->erase);
+ list_add(&new_aeb->u.list, &ai->erase);
goto retry;
}
- kfree(new_seb);
+ kfree(new_aeb);
out_free:
ubi_free_vid_hdr(ubi, vid_hdr);
return err;
@@ -369,20 +363,20 @@
/**
* process_lvol - process the layout volume.
* @ubi: UBI device description object
- * @si: scanning information
- * @sv: layout volume scanning information
+ * @ai: attaching information
+ * @av: layout volume attaching information
*
* This function is responsible for reading the layout volume, ensuring it is
* not corrupted, and recovering from corruptions if needed. Returns volume
* table in case of success and a negative error code in case of failure.
*/
static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi,
- struct ubi_scan_info *si,
- struct ubi_scan_volume *sv)
+ struct ubi_attach_info *ai,
+ struct ubi_ainf_volume *av)
{
int err;
struct rb_node *rb;
- struct ubi_scan_leb *seb;
+ struct ubi_ainf_peb *aeb;
struct ubi_vtbl_record *leb[UBI_LAYOUT_VOLUME_EBS] = { NULL, NULL };
int leb_corrupted[UBI_LAYOUT_VOLUME_EBS] = {1, 1};
@@ -414,14 +408,14 @@
dbg_gen("check layout volume");
/* Read both LEB 0 and LEB 1 into memory */
- ubi_rb_for_each_entry(rb, seb, &sv->root, u.rb) {
- leb[seb->lnum] = vzalloc(ubi->vtbl_size);
- if (!leb[seb->lnum]) {
+ ubi_rb_for_each_entry(rb, aeb, &av->root, u.rb) {
+ leb[aeb->lnum] = vzalloc(ubi->vtbl_size);
+ if (!leb[aeb->lnum]) {
err = -ENOMEM;
goto out_free;
}
- err = ubi_io_read_data(ubi, leb[seb->lnum], seb->pnum, 0,
+ err = ubi_io_read_data(ubi, leb[aeb->lnum], aeb->pnum, 0,
ubi->vtbl_size);
if (err == UBI_IO_BITFLIPS || mtd_is_eccerr(err))
/*
@@ -429,12 +423,12 @@
* uncorrectable ECC error, but we have our own CRC and
* the data will be checked later. If the data is OK,
* the PEB will be scrubbed (because we set
- * seb->scrub). If the data is not OK, the contents of
+ * aeb->scrub). If the data is not OK, the contents of
* the PEB will be recovered from the second copy, and
- * seb->scrub will be cleared in
- * 'ubi_scan_add_used()'.
+ * aeb->scrub will be cleared in
+ * 'ubi_add_to_av()'.
*/
- seb->scrub = 1;
+ aeb->scrub = 1;
else if (err)
goto out_free;
}
@@ -453,7 +447,7 @@
ubi->vtbl_size);
if (leb_corrupted[1]) {
ubi_warn("volume table copy #2 is corrupted");
- err = create_vtbl(ubi, si, 1, leb[0]);
+ err = create_vtbl(ubi, ai, 1, leb[0]);
if (err)
goto out_free;
ubi_msg("volume table was restored");
@@ -476,7 +470,7 @@
}
ubi_warn("volume table copy #1 is corrupted");
- err = create_vtbl(ubi, si, 0, leb[1]);
+ err = create_vtbl(ubi, ai, 0, leb[1]);
if (err)
goto out_free;
ubi_msg("volume table was restored");
@@ -494,13 +488,13 @@
/**
* create_empty_lvol - create empty layout volume.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* This function returns volume table contents in case of success and a
* negative error code in case of failure.
*/
static struct ubi_vtbl_record *create_empty_lvol(struct ubi_device *ubi,
- struct ubi_scan_info *si)
+ struct ubi_attach_info *ai)
{
int i;
struct ubi_vtbl_record *vtbl;
@@ -515,7 +509,7 @@
for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {
int err;
- err = create_vtbl(ubi, si, i, vtbl);
+ err = create_vtbl(ubi, ai, i, vtbl);
if (err) {
vfree(vtbl);
return ERR_PTR(err);
@@ -528,18 +522,19 @@
/**
* init_volumes - initialize volume information for existing volumes.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: scanning information
* @vtbl: volume table
*
* This function allocates volume description objects for existing volumes.
* Returns zero in case of success and a negative error code in case of
* failure.
*/
-static int init_volumes(struct ubi_device *ubi, const struct ubi_scan_info *si,
+static int init_volumes(struct ubi_device *ubi,
+ const struct ubi_attach_info *ai,
const struct ubi_vtbl_record *vtbl)
{
int i, reserved_pebs = 0;
- struct ubi_scan_volume *sv;
+ struct ubi_ainf_volume *av;
struct ubi_volume *vol;
for (i = 0; i < ubi->vtbl_slots; i++) {
@@ -595,8 +590,8 @@
}
/* Static volumes only */
- sv = ubi_scan_find_sv(si, i);
- if (!sv) {
+ av = ubi_find_av(ai, i);
+ if (!av) {
/*
* No eraseblocks belonging to this volume found. We
* don't actually know whether this static volume is
@@ -608,22 +603,22 @@
continue;
}
- if (sv->leb_count != sv->used_ebs) {
+ if (av->leb_count != av->used_ebs) {
/*
* We found a static volume which misses several
* eraseblocks. Treat it as corrupted.
*/
ubi_warn("static volume %d misses %d LEBs - corrupted",
- sv->vol_id, sv->used_ebs - sv->leb_count);
+ av->vol_id, av->used_ebs - av->leb_count);
vol->corrupted = 1;
continue;
}
- vol->used_ebs = sv->used_ebs;
+ vol->used_ebs = av->used_ebs;
vol->used_bytes =
(long long)(vol->used_ebs - 1) * vol->usable_leb_size;
- vol->used_bytes += sv->last_data_size;
- vol->last_eb_bytes = sv->last_data_size;
+ vol->used_bytes += av->last_data_size;
+ vol->last_eb_bytes = av->last_data_size;
}
/* And add the layout volume */
@@ -664,105 +659,104 @@
}
/**
- * check_sv - check volume scanning information.
+ * check_av - check volume attaching information.
* @vol: UBI volume description object
- * @sv: volume scanning information
+ * @av: volume attaching information
*
- * This function returns zero if the volume scanning information is consistent
+ * This function returns zero if the volume attaching information is consistent
* to the data read from the volume tabla, and %-EINVAL if not.
*/
-static int check_sv(const struct ubi_volume *vol,
- const struct ubi_scan_volume *sv)
+static int check_av(const struct ubi_volume *vol,
+ const struct ubi_ainf_volume *av)
{
int err;
- if (sv->highest_lnum >= vol->reserved_pebs) {
+ if (av->highest_lnum >= vol->reserved_pebs) {
err = 1;
goto bad;
}
- if (sv->leb_count > vol->reserved_pebs) {
+ if (av->leb_count > vol->reserved_pebs) {
err = 2;
goto bad;
}
- if (sv->vol_type != vol->vol_type) {
+ if (av->vol_type != vol->vol_type) {
err = 3;
goto bad;
}
- if (sv->used_ebs > vol->reserved_pebs) {
+ if (av->used_ebs > vol->reserved_pebs) {
err = 4;
goto bad;
}
- if (sv->data_pad != vol->data_pad) {
+ if (av->data_pad != vol->data_pad) {
err = 5;
goto bad;
}
return 0;
bad:
- ubi_err("bad scanning information, error %d", err);
- ubi_dbg_dump_sv(sv);
- ubi_dbg_dump_vol_info(vol);
+ ubi_err("bad attaching information, error %d", err);
+ ubi_dump_av(av);
+ ubi_dump_vol_info(vol);
return -EINVAL;
}
/**
- * check_scanning_info - check that scanning information.
+ * check_attaching_info - check that attaching information.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* Even though we protect on-flash data by CRC checksums, we still don't trust
- * the media. This function ensures that scanning information is consistent to
- * the information read from the volume table. Returns zero if the scanning
+ * the media. This function ensures that attaching information is consistent to
+ * the information read from the volume table. Returns zero if the attaching
* information is OK and %-EINVAL if it is not.
*/
-static int check_scanning_info(const struct ubi_device *ubi,
- struct ubi_scan_info *si)
+static int check_attaching_info(const struct ubi_device *ubi,
+ struct ubi_attach_info *ai)
{
int err, i;
- struct ubi_scan_volume *sv;
+ struct ubi_ainf_volume *av;
struct ubi_volume *vol;
- if (si->vols_found > UBI_INT_VOL_COUNT + ubi->vtbl_slots) {
- ubi_err("scanning found %d volumes, maximum is %d + %d",
- si->vols_found, UBI_INT_VOL_COUNT, ubi->vtbl_slots);
+ if (ai->vols_found > UBI_INT_VOL_COUNT + ubi->vtbl_slots) {
+ ubi_err("found %d volumes while attaching, maximum is %d + %d",
+ ai->vols_found, UBI_INT_VOL_COUNT, ubi->vtbl_slots);
return -EINVAL;
}
- if (si->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT &&
- si->highest_vol_id < UBI_INTERNAL_VOL_START) {
- ubi_err("too large volume ID %d found by scanning",
- si->highest_vol_id);
+ if (ai->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT &&
+ ai->highest_vol_id < UBI_INTERNAL_VOL_START) {
+ ubi_err("too large volume ID %d found", ai->highest_vol_id);
return -EINVAL;
}
for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {
cond_resched();
- sv = ubi_scan_find_sv(si, i);
+ av = ubi_find_av(ai, i);
vol = ubi->volumes[i];
if (!vol) {
- if (sv)
- ubi_scan_rm_volume(si, sv);
+ if (av)
+ ubi_remove_av(ai, av);
continue;
}
if (vol->reserved_pebs == 0) {
ubi_assert(i < ubi->vtbl_slots);
- if (!sv)
+ if (!av)
continue;
/*
- * During scanning we found a volume which does not
+ * During attaching we found a volume which does not
* exist according to the information in the volume
* table. This must have happened due to an unclean
* reboot while the volume was being removed. Discard
* these eraseblocks.
*/
- ubi_msg("finish volume %d removal", sv->vol_id);
- ubi_scan_rm_volume(si, sv);
- } else if (sv) {
- err = check_sv(vol, sv);
+ ubi_msg("finish volume %d removal", av->vol_id);
+ ubi_remove_av(ai, av);
+ } else if (av) {
+ err = check_av(vol, av);
if (err)
return err;
}
@@ -774,16 +768,16 @@
/**
* ubi_read_volume_table - read the volume table.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* This function reads volume table, checks it, recover from errors if needed,
* or creates it if needed. Returns zero in case of success and a negative
* error code in case of failure.
*/
-int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si)
+int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_attach_info *ai)
{
int i, err;
- struct ubi_scan_volume *sv;
+ struct ubi_ainf_volume *av;
empty_vtbl_record.crc = cpu_to_be32(0xf116c36b);
@@ -798,8 +792,8 @@
ubi->vtbl_size = ubi->vtbl_slots * UBI_VTBL_RECORD_SIZE;
ubi->vtbl_size = ALIGN(ubi->vtbl_size, ubi->min_io_size);
- sv = ubi_scan_find_sv(si, UBI_LAYOUT_VOLUME_ID);
- if (!sv) {
+ av = ubi_find_av(ai, UBI_LAYOUT_VOLUME_ID);
+ if (!av) {
/*
* No logical eraseblocks belonging to the layout volume were
* found. This could mean that the flash is just empty. In
@@ -808,8 +802,8 @@
* But if flash is not empty this must be a corruption or the
* MTD device just contains garbage.
*/
- if (si->is_empty) {
- ubi->vtbl = create_empty_lvol(ubi, si);
+ if (ai->is_empty) {
+ ubi->vtbl = create_empty_lvol(ubi, ai);
if (IS_ERR(ubi->vtbl))
return PTR_ERR(ubi->vtbl);
} else {
@@ -817,14 +811,14 @@
return -EINVAL;
}
} else {
- if (sv->leb_count > UBI_LAYOUT_VOLUME_EBS) {
+ if (av->leb_count > UBI_LAYOUT_VOLUME_EBS) {
/* This must not happen with proper UBI images */
- dbg_err("too many LEBs (%d) in layout volume",
- sv->leb_count);
+ ubi_err("too many LEBs (%d) in layout volume",
+ av->leb_count);
return -EINVAL;
}
- ubi->vtbl = process_lvol(ubi, si, sv);
+ ubi->vtbl = process_lvol(ubi, ai, av);
if (IS_ERR(ubi->vtbl))
return PTR_ERR(ubi->vtbl);
}
@@ -835,15 +829,15 @@
* The layout volume is OK, initialize the corresponding in-RAM data
* structures.
*/
- err = init_volumes(ubi, si, ubi->vtbl);
+ err = init_volumes(ubi, ai, ubi->vtbl);
if (err)
goto out_free;
/*
- * Make sure that the scanning information is consistent to the
+ * Make sure that the attaching information is consistent to the
* information stored in the volume table.
*/
- err = check_scanning_info(ubi, si);
+ err = check_attaching_info(ubi, ai);
if (err)
goto out_free;
@@ -858,21 +852,17 @@
return err;
}
-#ifdef CONFIG_MTD_UBI_DEBUG
-
/**
- * paranoid_vtbl_check - check volume table.
+ * self_vtbl_check - check volume table.
* @ubi: UBI device description object
*/
-static void paranoid_vtbl_check(const struct ubi_device *ubi)
+static void self_vtbl_check(const struct ubi_device *ubi)
{
if (!ubi->dbg->chk_gen)
return;
if (vtbl_check(ubi, ubi->vtbl)) {
- ubi_err("paranoid check failed");
+ ubi_err("self-check failed");
BUG();
}
}
-
-#endif /* CONFIG_MTD_UBI_DEBUG */
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 7c1a9bf..9df100a 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -41,12 +41,6 @@
* physical eraseblocks with low erase counter to free physical eraseblocks
* with high erase counter.
*
- * The 'ubi_wl_get_peb()' function accepts data type hints which help to pick
- * an "optimal" physical eraseblock. For example, when it is known that the
- * physical eraseblock will be "put" soon because it contains short-term data,
- * the WL sub-system may pick a free physical eraseblock with low erase
- * counter, and so forth.
- *
* If the WL sub-system fails to erase a physical eraseblock, it marks it as
* bad.
*
@@ -70,8 +64,7 @@
* to the user; instead, we first want to let users fill them up with data;
*
* o there is a chance that the user will put the physical eraseblock very
- * soon, so it makes sense not to move it for some time, but wait; this is
- * especially important in case of "short term" physical eraseblocks.
+ * soon, so it makes sense not to move it for some time, but wait.
*
* Physical eraseblocks stay protected only for limited time. But the "time" is
* measured in erase cycles in this case. This is implemented with help of the
@@ -147,6 +140,8 @@
* @list: a link in the list of pending works
* @func: worker function
* @e: physical eraseblock to erase
+ * @vol_id: the volume ID on which this erasure is being performed
+ * @lnum: the logical eraseblock number
* @torture: if the physical eraseblock has to be tortured
*
* The @func pointer points to the worker function. If the @cancel argument is
@@ -159,21 +154,16 @@
int (*func)(struct ubi_device *ubi, struct ubi_work *wrk, int cancel);
/* The below fields are only relevant to erasure works */
struct ubi_wl_entry *e;
+ int vol_id;
+ int lnum;
int torture;
};
-#ifdef CONFIG_MTD_UBI_DEBUG
-static int paranoid_check_ec(struct ubi_device *ubi, int pnum, int ec);
-static int paranoid_check_in_wl_tree(const struct ubi_device *ubi,
- struct ubi_wl_entry *e,
- struct rb_root *root);
-static int paranoid_check_in_pq(const struct ubi_device *ubi,
- struct ubi_wl_entry *e);
-#else
-#define paranoid_check_ec(ubi, pnum, ec) 0
-#define paranoid_check_in_wl_tree(ubi, e, root)
-#define paranoid_check_in_pq(ubi, e) 0
-#endif
+static int self_check_ec(struct ubi_device *ubi, int pnum, int ec);
+static int self_check_in_wl_tree(const struct ubi_device *ubi,
+ struct ubi_wl_entry *e, struct rb_root *root);
+static int self_check_in_pq(const struct ubi_device *ubi,
+ struct ubi_wl_entry *e);
/**
* wl_tree_add - add a wear-leveling entry to a WL RB-tree.
@@ -383,19 +373,15 @@
/**
* ubi_wl_get_peb - get a physical eraseblock.
* @ubi: UBI device description object
- * @dtype: type of data which will be stored in this physical eraseblock
*
* This function returns a physical eraseblock in case of success and a
* negative error code in case of failure. Might sleep.
*/
-int ubi_wl_get_peb(struct ubi_device *ubi, int dtype)
+int ubi_wl_get_peb(struct ubi_device *ubi)
{
int err;
struct ubi_wl_entry *e, *first, *last;
- ubi_assert(dtype == UBI_LONGTERM || dtype == UBI_SHORTTERM ||
- dtype == UBI_UNKNOWN);
-
retry:
spin_lock(&ubi->wl_lock);
if (!ubi->free.rb_node) {
@@ -413,45 +399,15 @@
goto retry;
}
- switch (dtype) {
- case UBI_LONGTERM:
- /*
- * For long term data we pick a physical eraseblock with high
- * erase counter. But the highest erase counter we can pick is
- * bounded by the the lowest erase counter plus
- * %WL_FREE_MAX_DIFF.
- */
- e = find_wl_entry(&ubi->free, WL_FREE_MAX_DIFF);
- break;
- case UBI_UNKNOWN:
- /*
- * For unknown data we pick a physical eraseblock with medium
- * erase counter. But we by no means can pick a physical
- * eraseblock with erase counter greater or equivalent than the
- * lowest erase counter plus %WL_FREE_MAX_DIFF/2.
- */
- first = rb_entry(rb_first(&ubi->free), struct ubi_wl_entry,
- u.rb);
- last = rb_entry(rb_last(&ubi->free), struct ubi_wl_entry, u.rb);
+ first = rb_entry(rb_first(&ubi->free), struct ubi_wl_entry, u.rb);
+ last = rb_entry(rb_last(&ubi->free), struct ubi_wl_entry, u.rb);
- if (last->ec - first->ec < WL_FREE_MAX_DIFF)
- e = rb_entry(ubi->free.rb_node,
- struct ubi_wl_entry, u.rb);
- else
- e = find_wl_entry(&ubi->free, WL_FREE_MAX_DIFF/2);
- break;
- case UBI_SHORTTERM:
- /*
- * For short term data we pick a physical eraseblock with the
- * lowest erase counter as we expect it will be erased soon.
- */
- e = rb_entry(rb_first(&ubi->free), struct ubi_wl_entry, u.rb);
- break;
- default:
- BUG();
- }
+ if (last->ec - first->ec < WL_FREE_MAX_DIFF)
+ e = rb_entry(ubi->free.rb_node, struct ubi_wl_entry, u.rb);
+ else
+ e = find_wl_entry(&ubi->free, WL_FREE_MAX_DIFF/2);
- paranoid_check_in_wl_tree(ubi, e, &ubi->free);
+ self_check_in_wl_tree(ubi, e, &ubi->free);
/*
* Move the physical eraseblock to the protection queue where it will
@@ -462,8 +418,8 @@
prot_queue_add(ubi, e);
spin_unlock(&ubi->wl_lock);
- err = ubi_dbg_check_all_ff(ubi, e->pnum, ubi->vid_hdr_aloffset,
- ubi->peb_size - ubi->vid_hdr_aloffset);
+ err = ubi_self_check_all_ff(ubi, e->pnum, ubi->vid_hdr_aloffset,
+ ubi->peb_size - ubi->vid_hdr_aloffset);
if (err) {
ubi_err("new PEB %d does not contain all 0xFF bytes", e->pnum);
return err;
@@ -488,7 +444,7 @@
if (!e)
return -ENODEV;
- if (paranoid_check_in_pq(ubi, e))
+ if (self_check_in_pq(ubi, e))
return -ENODEV;
list_del(&e->u.list);
@@ -514,7 +470,7 @@
dbg_wl("erase PEB %d, old EC %llu", e->pnum, ec);
- err = paranoid_check_ec(ubi, e->pnum, e->ec);
+ err = self_check_ec(ubi, e->pnum, e->ec);
if (err)
return -EINVAL;
@@ -627,13 +583,15 @@
* schedule_erase - schedule an erase work.
* @ubi: UBI device description object
* @e: the WL entry of the physical eraseblock to erase
+ * @vol_id: the volume ID that last used this PEB
+ * @lnum: the last used logical eraseblock number for the PEB
* @torture: if the physical eraseblock has to be tortured
*
* This function returns zero in case of success and a %-ENOMEM in case of
* failure.
*/
static int schedule_erase(struct ubi_device *ubi, struct ubi_wl_entry *e,
- int torture)
+ int vol_id, int lnum, int torture)
{
struct ubi_work *wl_wrk;
@@ -646,6 +604,8 @@
wl_wrk->func = &erase_worker;
wl_wrk->e = e;
+ wl_wrk->vol_id = vol_id;
+ wl_wrk->lnum = lnum;
wl_wrk->torture = torture;
schedule_ubi_work(ubi, wl_wrk);
@@ -714,7 +674,7 @@
e1->ec, e2->ec);
goto out_cancel;
}
- paranoid_check_in_wl_tree(ubi, e1, &ubi->used);
+ self_check_in_wl_tree(ubi, e1, &ubi->used);
rb_erase(&e1->u.rb, &ubi->used);
dbg_wl("move PEB %d EC %d to PEB %d EC %d",
e1->pnum, e1->ec, e2->pnum, e2->ec);
@@ -723,12 +683,12 @@
scrubbing = 1;
e1 = rb_entry(rb_first(&ubi->scrub), struct ubi_wl_entry, u.rb);
e2 = find_wl_entry(&ubi->free, WL_FREE_MAX_DIFF);
- paranoid_check_in_wl_tree(ubi, e1, &ubi->scrub);
+ self_check_in_wl_tree(ubi, e1, &ubi->scrub);
rb_erase(&e1->u.rb, &ubi->scrub);
dbg_wl("scrub PEB %d to PEB %d", e1->pnum, e2->pnum);
}
- paranoid_check_in_wl_tree(ubi, e2, &ubi->free);
+ self_check_in_wl_tree(ubi, e2, &ubi->free);
rb_erase(&e2->u.rb, &ubi->free);
ubi->move_from = e1;
ubi->move_to = e2;
@@ -846,7 +806,7 @@
ubi->move_to_put = ubi->wl_scheduled = 0;
spin_unlock(&ubi->wl_lock);
- err = schedule_erase(ubi, e1, 0);
+ err = schedule_erase(ubi, e1, vol_id, lnum, 0);
if (err) {
kmem_cache_free(ubi_wl_entry_slab, e1);
if (e2)
@@ -861,7 +821,7 @@
*/
dbg_wl("PEB %d (LEB %d:%d) was put meanwhile, erase",
e2->pnum, vol_id, lnum);
- err = schedule_erase(ubi, e2, 0);
+ err = schedule_erase(ubi, e2, vol_id, lnum, 0);
if (err) {
kmem_cache_free(ubi_wl_entry_slab, e2);
goto out_ro;
@@ -900,7 +860,7 @@
spin_unlock(&ubi->wl_lock);
ubi_free_vid_hdr(ubi, vid_hdr);
- err = schedule_erase(ubi, e2, torture);
+ err = schedule_erase(ubi, e2, vol_id, lnum, torture);
if (err) {
kmem_cache_free(ubi_wl_entry_slab, e2);
goto out_ro;
@@ -1019,6 +979,8 @@
{
struct ubi_wl_entry *e = wl_wrk->e;
int pnum = e->pnum, err, need;
+ int vol_id = wl_wrk->vol_id;
+ int lnum = wl_wrk->lnum;
if (cancel) {
dbg_wl("cancel erasure of PEB %d EC %d", pnum, e->ec);
@@ -1027,7 +989,8 @@
return 0;
}
- dbg_wl("erase PEB %d EC %d", pnum, e->ec);
+ dbg_wl("erase PEB %d EC %d LEB %d:%d",
+ pnum, e->ec, wl_wrk->vol_id, wl_wrk->lnum);
err = sync_erase(ubi, e, wl_wrk->torture);
if (!err) {
@@ -1057,7 +1020,7 @@
int err1;
/* Re-schedule the LEB for erasure */
- err1 = schedule_erase(ubi, e, 0);
+ err1 = schedule_erase(ubi, e, vol_id, lnum, 0);
if (err1) {
err = err1;
goto out_ro;
@@ -1125,6 +1088,8 @@
/**
* ubi_wl_put_peb - return a PEB to the wear-leveling sub-system.
* @ubi: UBI device description object
+ * @vol_id: the volume ID that last used this PEB
+ * @lnum: the last used logical eraseblock number for the PEB
* @pnum: physical eraseblock to return
* @torture: if this physical eraseblock has to be tortured
*
@@ -1133,7 +1098,8 @@
* occurred to this @pnum and it has to be tested. This function returns zero
* in case of success, and a negative error code in case of failure.
*/
-int ubi_wl_put_peb(struct ubi_device *ubi, int pnum, int torture)
+int ubi_wl_put_peb(struct ubi_device *ubi, int vol_id, int lnum,
+ int pnum, int torture)
{
int err;
struct ubi_wl_entry *e;
@@ -1175,13 +1141,13 @@
return 0;
} else {
if (in_wl_tree(e, &ubi->used)) {
- paranoid_check_in_wl_tree(ubi, e, &ubi->used);
+ self_check_in_wl_tree(ubi, e, &ubi->used);
rb_erase(&e->u.rb, &ubi->used);
} else if (in_wl_tree(e, &ubi->scrub)) {
- paranoid_check_in_wl_tree(ubi, e, &ubi->scrub);
+ self_check_in_wl_tree(ubi, e, &ubi->scrub);
rb_erase(&e->u.rb, &ubi->scrub);
} else if (in_wl_tree(e, &ubi->erroneous)) {
- paranoid_check_in_wl_tree(ubi, e, &ubi->erroneous);
+ self_check_in_wl_tree(ubi, e, &ubi->erroneous);
rb_erase(&e->u.rb, &ubi->erroneous);
ubi->erroneous_peb_count -= 1;
ubi_assert(ubi->erroneous_peb_count >= 0);
@@ -1199,7 +1165,7 @@
}
spin_unlock(&ubi->wl_lock);
- err = schedule_erase(ubi, e, torture);
+ err = schedule_erase(ubi, e, vol_id, lnum, torture);
if (err) {
spin_lock(&ubi->wl_lock);
wl_tree_add(e, &ubi->used);
@@ -1248,7 +1214,7 @@
}
if (in_wl_tree(e, &ubi->used)) {
- paranoid_check_in_wl_tree(ubi, e, &ubi->used);
+ self_check_in_wl_tree(ubi, e, &ubi->used);
rb_erase(&e->u.rb, &ubi->used);
} else {
int err;
@@ -1275,44 +1241,55 @@
/**
* ubi_wl_flush - flush all pending works.
* @ubi: UBI device description object
+ * @vol_id: the volume id to flush for
+ * @lnum: the logical eraseblock number to flush for
*
- * This function returns zero in case of success and a negative error code in
- * case of failure.
+ * This function executes all pending works for a particular volume id /
+ * logical eraseblock number pair. If either value is set to %UBI_ALL, then it
+ * acts as a wildcard for all of the corresponding volume numbers or logical
+ * eraseblock numbers. It returns zero in case of success and a negative error
+ * code in case of failure.
*/
-int ubi_wl_flush(struct ubi_device *ubi)
+int ubi_wl_flush(struct ubi_device *ubi, int vol_id, int lnum)
{
- int err;
+ int err = 0;
+ int found = 1;
/*
* Erase while the pending works queue is not empty, but not more than
* the number of currently pending works.
*/
- dbg_wl("flush (%d pending works)", ubi->works_count);
- while (ubi->works_count) {
- err = do_work(ubi);
- if (err)
- return err;
- }
+ dbg_wl("flush pending work for LEB %d:%d (%d pending works)",
+ vol_id, lnum, ubi->works_count);
- /*
- * Make sure all the works which have been done in parallel are
- * finished.
- */
down_write(&ubi->work_sem);
- up_write(&ubi->work_sem);
+ while (found) {
+ struct ubi_work *wrk;
+ found = 0;
- /*
- * And in case last was the WL worker and it canceled the LEB
- * movement, flush again.
- */
- while (ubi->works_count) {
- dbg_wl("flush more (%d pending works)", ubi->works_count);
- err = do_work(ubi);
- if (err)
- return err;
+ spin_lock(&ubi->wl_lock);
+ list_for_each_entry(wrk, &ubi->works, list) {
+ if ((vol_id == UBI_ALL || wrk->vol_id == vol_id) &&
+ (lnum == UBI_ALL || wrk->lnum == lnum)) {
+ list_del(&wrk->list);
+ ubi->works_count -= 1;
+ ubi_assert(ubi->works_count >= 0);
+ spin_unlock(&ubi->wl_lock);
+
+ err = wrk->func(ubi, wrk, 0);
+ if (err)
+ goto out;
+ spin_lock(&ubi->wl_lock);
+ found = 1;
+ break;
+ }
+ }
+ spin_unlock(&ubi->wl_lock);
}
- return 0;
+out:
+ up_write(&ubi->work_sem);
+ return err;
}
/**
@@ -1421,26 +1398,26 @@
}
/**
- * ubi_wl_init_scan - initialize the WL sub-system using scanning information.
+ * ubi_wl_init - initialize the WL sub-system using attaching information.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* This function returns zero in case of success, and a negative error code in
* case of failure.
*/
-int ubi_wl_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si)
+int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
{
int err, i;
struct rb_node *rb1, *rb2;
- struct ubi_scan_volume *sv;
- struct ubi_scan_leb *seb, *tmp;
+ struct ubi_ainf_volume *av;
+ struct ubi_ainf_peb *aeb, *tmp;
struct ubi_wl_entry *e;
ubi->used = ubi->erroneous = ubi->free = ubi->scrub = RB_ROOT;
spin_lock_init(&ubi->wl_lock);
mutex_init(&ubi->move_mutex);
init_rwsem(&ubi->work_sem);
- ubi->max_ec = si->max_ec;
+ ubi->max_ec = ai->max_ec;
INIT_LIST_HEAD(&ubi->works);
sprintf(ubi->bgt_name, UBI_BGT_NAME_PATTERN, ubi->ubi_num);
@@ -1454,48 +1431,48 @@
INIT_LIST_HEAD(&ubi->pq[i]);
ubi->pq_head = 0;
- list_for_each_entry_safe(seb, tmp, &si->erase, u.list) {
+ list_for_each_entry_safe(aeb, tmp, &ai->erase, u.list) {
cond_resched();
e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
if (!e)
goto out_free;
- e->pnum = seb->pnum;
- e->ec = seb->ec;
+ e->pnum = aeb->pnum;
+ e->ec = aeb->ec;
ubi->lookuptbl[e->pnum] = e;
- if (schedule_erase(ubi, e, 0)) {
+ if (schedule_erase(ubi, e, aeb->vol_id, aeb->lnum, 0)) {
kmem_cache_free(ubi_wl_entry_slab, e);
goto out_free;
}
}
- list_for_each_entry(seb, &si->free, u.list) {
+ list_for_each_entry(aeb, &ai->free, u.list) {
cond_resched();
e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
if (!e)
goto out_free;
- e->pnum = seb->pnum;
- e->ec = seb->ec;
+ e->pnum = aeb->pnum;
+ e->ec = aeb->ec;
ubi_assert(e->ec >= 0);
wl_tree_add(e, &ubi->free);
ubi->lookuptbl[e->pnum] = e;
}
- ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb) {
- ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb) {
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb) {
+ ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb) {
cond_resched();
e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
if (!e)
goto out_free;
- e->pnum = seb->pnum;
- e->ec = seb->ec;
+ e->pnum = aeb->pnum;
+ e->ec = aeb->ec;
ubi->lookuptbl[e->pnum] = e;
- if (!seb->scrub) {
+ if (!aeb->scrub) {
dbg_wl("add PEB %d EC %d to the used tree",
e->pnum, e->ec);
wl_tree_add(e, &ubi->used);
@@ -1567,10 +1544,8 @@
kfree(ubi->lookuptbl);
}
-#ifdef CONFIG_MTD_UBI_DEBUG
-
/**
- * paranoid_check_ec - make sure that the erase counter of a PEB is correct.
+ * self_check_ec - make sure that the erase counter of a PEB is correct.
* @ubi: UBI device description object
* @pnum: the physical eraseblock number to check
* @ec: the erase counter to check
@@ -1579,7 +1554,7 @@
* is equivalent to @ec, and a negative error code if not or if an error
* occurred.
*/
-static int paranoid_check_ec(struct ubi_device *ubi, int pnum, int ec)
+static int self_check_ec(struct ubi_device *ubi, int pnum, int ec)
{
int err;
long long read_ec;
@@ -1601,9 +1576,9 @@
read_ec = be64_to_cpu(ec_hdr->ec);
if (ec != read_ec) {
- ubi_err("paranoid check failed for PEB %d", pnum);
+ ubi_err("self-check failed for PEB %d", pnum);
ubi_err("read EC is %lld, should be %d", read_ec, ec);
- ubi_dbg_dump_stack();
+ dump_stack();
err = 1;
} else
err = 0;
@@ -1614,7 +1589,7 @@
}
/**
- * paranoid_check_in_wl_tree - check that wear-leveling entry is in WL RB-tree.
+ * self_check_in_wl_tree - check that wear-leveling entry is in WL RB-tree.
* @ubi: UBI device description object
* @e: the wear-leveling entry to check
* @root: the root of the tree
@@ -1622,9 +1597,8 @@
* This function returns zero if @e is in the @root RB-tree and %-EINVAL if it
* is not.
*/
-static int paranoid_check_in_wl_tree(const struct ubi_device *ubi,
- struct ubi_wl_entry *e,
- struct rb_root *root)
+static int self_check_in_wl_tree(const struct ubi_device *ubi,
+ struct ubi_wl_entry *e, struct rb_root *root)
{
if (!ubi->dbg->chk_gen)
return 0;
@@ -1632,22 +1606,22 @@
if (in_wl_tree(e, root))
return 0;
- ubi_err("paranoid check failed for PEB %d, EC %d, RB-tree %p ",
+ ubi_err("self-check failed for PEB %d, EC %d, RB-tree %p ",
e->pnum, e->ec, root);
- ubi_dbg_dump_stack();
+ dump_stack();
return -EINVAL;
}
/**
- * paranoid_check_in_pq - check if wear-leveling entry is in the protection
+ * self_check_in_pq - check if wear-leveling entry is in the protection
* queue.
* @ubi: UBI device description object
* @e: the wear-leveling entry to check
*
* This function returns zero if @e is in @ubi->pq and %-EINVAL if it is not.
*/
-static int paranoid_check_in_pq(const struct ubi_device *ubi,
- struct ubi_wl_entry *e)
+static int self_check_in_pq(const struct ubi_device *ubi,
+ struct ubi_wl_entry *e)
{
struct ubi_wl_entry *p;
int i;
@@ -1660,10 +1634,8 @@
if (p == e)
return 0;
- ubi_err("paranoid check failed for PEB %d, EC %d, Protect queue",
+ ubi_err("self-check failed for PEB %d, EC %d, Protect queue",
e->pnum, e->ec);
- ubi_dbg_dump_stack();
+ dump_stack();
return -EINVAL;
}
-
-#endif /* CONFIG_MTD_UBI_DEBUG */
diff --git a/fs/ubifs/Kconfig b/fs/ubifs/Kconfig
index f8b0160..ba66d508 100644
--- a/fs/ubifs/Kconfig
+++ b/fs/ubifs/Kconfig
@@ -11,12 +11,6 @@
help
UBIFS is a file system for flash devices which works on top of UBI.
-config UBIFS_FS_XATTR
- bool "Extended attributes support"
- depends on UBIFS_FS
- help
- This option enables support of extended attributes.
-
config UBIFS_FS_ADVANCED_COMPR
bool "Advanced compression options"
depends on UBIFS_FS
@@ -41,20 +35,3 @@
default y
help
Zlib compresses better than LZO but it is slower. Say 'Y' if unsure.
-
-# Debugging-related stuff
-config UBIFS_FS_DEBUG
- bool "Enable debugging support"
- depends on UBIFS_FS
- select DEBUG_FS
- select KALLSYMS
- help
- This option enables UBIFS debugging support. It makes sure various
- assertions, self-checks, debugging messages and test modes are compiled
- in (this all is compiled out otherwise). Assertions are light-weight
- and this option also enables them. Self-checks, debugging messages and
- test modes are switched off by default. Thus, it is safe and actually
- recommended to have debugging support enabled, and it should not slow
- down UBIFS. You can then further enable / disable individual debugging
- features using UBIFS module parameters and the corresponding sysfs
- interfaces.
diff --git a/fs/ubifs/Makefile b/fs/ubifs/Makefile
index 80e93c3..2c6f0cb 100644
--- a/fs/ubifs/Makefile
+++ b/fs/ubifs/Makefile
@@ -3,7 +3,4 @@
ubifs-y += shrinker.o journal.o file.o dir.o super.o sb.o io.o
ubifs-y += tnc.o master.o scan.o replay.o log.o commit.o gc.o orphan.o
ubifs-y += budget.o find.o tnc_commit.o compress.o lpt.o lprops.o
-ubifs-y += recovery.o ioctl.o lpt_commit.o tnc_misc.o
-
-ubifs-$(CONFIG_UBIFS_FS_DEBUG) += debug.o
-ubifs-$(CONFIG_UBIFS_FS_XATTR) += xattr.o
+ubifs-y += recovery.o ioctl.o lpt_commit.o tnc_misc.o xattr.o debug.o
diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c
index fb3b5c8..8eda717 100644
--- a/fs/ubifs/commit.c
+++ b/fs/ubifs/commit.c
@@ -496,7 +496,9 @@
return ret;
}
-#ifdef CONFIG_UBIFS_FS_DEBUG
+/*
+ * Everything below is related to debugging.
+ */
/**
* struct idx_node - hold index nodes during index tree traversal.
@@ -714,14 +716,14 @@
return 0;
out_dump:
- dbg_err("dumping index node (iip=%d)", i->iip);
- dbg_dump_node(c, idx);
+ ubifs_err("dumping index node (iip=%d)", i->iip);
+ ubifs_dump_node(c, idx);
list_del(&i->list);
kfree(i);
if (!list_empty(&list)) {
i = list_entry(list.prev, struct idx_node, list);
- dbg_err("dumping parent index node");
- dbg_dump_node(c, &i->idx);
+ ubifs_err("dumping parent index node");
+ ubifs_dump_node(c, &i->idx);
}
out_free:
while (!list_empty(&list)) {
@@ -734,5 +736,3 @@
err = -EINVAL;
return err;
}
-
-#endif /* CONFIG_UBIFS_FS_DEBUG */
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 1934084..685a837 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -34,8 +34,6 @@
#include <linux/random.h>
#include "ubifs.h"
-#ifdef CONFIG_UBIFS_FS_DEBUG
-
static DEFINE_SPINLOCK(dbg_lock);
static const char *get_key_fmt(int fmt)
@@ -232,7 +230,7 @@
printk(KERN_ERR "\tlen %u\n", le32_to_cpu(ch->len));
}
-void dbg_dump_inode(struct ubifs_info *c, const struct inode *inode)
+void ubifs_dump_inode(struct ubifs_info *c, const struct inode *inode)
{
const struct ubifs_inode *ui = ubifs_inode(inode);
struct qstr nm = { .name = NULL };
@@ -300,7 +298,7 @@
kfree(pdent);
}
-void dbg_dump_node(const struct ubifs_info *c, const void *node)
+void ubifs_dump_node(const struct ubifs_info *c, const void *node)
{
int i, n;
union ubifs_key key;
@@ -603,7 +601,7 @@
spin_unlock(&dbg_lock);
}
-void dbg_dump_budget_req(const struct ubifs_budget_req *req)
+void ubifs_dump_budget_req(const struct ubifs_budget_req *req)
{
spin_lock(&dbg_lock);
printk(KERN_ERR "Budgeting request: new_ino %d, dirtied_ino %d\n",
@@ -620,7 +618,7 @@
spin_unlock(&dbg_lock);
}
-void dbg_dump_lstats(const struct ubifs_lp_stats *lst)
+void ubifs_dump_lstats(const struct ubifs_lp_stats *lst)
{
spin_lock(&dbg_lock);
printk(KERN_ERR "(pid %d) Lprops statistics: empty_lebs %d, "
@@ -634,7 +632,7 @@
spin_unlock(&dbg_lock);
}
-void dbg_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi)
+void ubifs_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi)
{
int i;
struct rb_node *rb;
@@ -707,7 +705,7 @@
spin_unlock(&c->space_lock);
}
-void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp)
+void ubifs_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp)
{
int i, spc, dark = 0, dead = 0;
struct rb_node *rb;
@@ -801,7 +799,7 @@
printk(KERN_CONT ")\n");
}
-void dbg_dump_lprops(struct ubifs_info *c)
+void ubifs_dump_lprops(struct ubifs_info *c)
{
int lnum, err;
struct ubifs_lprops lp;
@@ -810,20 +808,20 @@
printk(KERN_ERR "(pid %d) start dumping LEB properties\n",
current->pid);
ubifs_get_lp_stats(c, &lst);
- dbg_dump_lstats(&lst);
+ ubifs_dump_lstats(&lst);
for (lnum = c->main_first; lnum < c->leb_cnt; lnum++) {
err = ubifs_read_one_lp(c, lnum, &lp);
if (err)
ubifs_err("cannot read lprops for LEB %d", lnum);
- dbg_dump_lprop(c, &lp);
+ ubifs_dump_lprop(c, &lp);
}
printk(KERN_ERR "(pid %d) finish dumping LEB properties\n",
current->pid);
}
-void dbg_dump_lpt_info(struct ubifs_info *c)
+void ubifs_dump_lpt_info(struct ubifs_info *c)
{
int i;
@@ -862,8 +860,8 @@
spin_unlock(&dbg_lock);
}
-void dbg_dump_sleb(const struct ubifs_info *c,
- const struct ubifs_scan_leb *sleb, int offs)
+void ubifs_dump_sleb(const struct ubifs_info *c,
+ const struct ubifs_scan_leb *sleb, int offs)
{
struct ubifs_scan_node *snod;
@@ -874,11 +872,11 @@
cond_resched();
printk(KERN_ERR "Dumping node at LEB %d:%d len %d\n", sleb->lnum,
snod->offs, snod->len);
- dbg_dump_node(c, snod->node);
+ ubifs_dump_node(c, snod->node);
}
}
-void dbg_dump_leb(const struct ubifs_info *c, int lnum)
+void ubifs_dump_leb(const struct ubifs_info *c, int lnum)
{
struct ubifs_scan_leb *sleb;
struct ubifs_scan_node *snod;
@@ -909,7 +907,7 @@
cond_resched();
printk(KERN_ERR "Dumping node at LEB %d:%d len %d\n", lnum,
snod->offs, snod->len);
- dbg_dump_node(c, snod->node);
+ ubifs_dump_node(c, snod->node);
}
printk(KERN_ERR "(pid %d) finish dumping LEB %d\n",
@@ -921,8 +919,8 @@
return;
}
-void dbg_dump_znode(const struct ubifs_info *c,
- const struct ubifs_znode *znode)
+void ubifs_dump_znode(const struct ubifs_info *c,
+ const struct ubifs_znode *znode)
{
int n;
const struct ubifs_zbranch *zbr;
@@ -965,7 +963,7 @@
spin_unlock(&dbg_lock);
}
-void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat)
+void ubifs_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat)
{
int i;
@@ -981,8 +979,8 @@
printk(KERN_ERR "(pid %d) finish dumping heap\n", current->pid);
}
-void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
- struct ubifs_nnode *parent, int iip)
+void ubifs_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
+ struct ubifs_nnode *parent, int iip)
{
int i;
@@ -999,7 +997,7 @@
}
}
-void dbg_dump_tnc(struct ubifs_info *c)
+void ubifs_dump_tnc(struct ubifs_info *c)
{
struct ubifs_znode *znode;
int level;
@@ -1014,7 +1012,7 @@
level = znode->level;
printk(KERN_ERR "== Level %d ==\n", level);
}
- dbg_dump_znode(c, znode);
+ ubifs_dump_znode(c, znode);
znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode);
}
printk(KERN_ERR "(pid %d) finish dumping TNC tree\n", current->pid);
@@ -1023,18 +1021,18 @@
static int dump_znode(struct ubifs_info *c, struct ubifs_znode *znode,
void *priv)
{
- dbg_dump_znode(c, znode);
+ ubifs_dump_znode(c, znode);
return 0;
}
/**
- * dbg_dump_index - dump the on-flash index.
+ * ubifs_dump_index - dump the on-flash index.
* @c: UBIFS file-system description object
*
- * This function dumps whole UBIFS indexing B-tree, unlike 'dbg_dump_tnc()'
+ * This function dumps whole UBIFS indexing B-tree, unlike 'ubifs_dump_tnc()'
* which dumps only in-memory znodes and does not read znodes which from flash.
*/
-void dbg_dump_index(struct ubifs_info *c)
+void ubifs_dump_index(struct ubifs_info *c)
{
dbg_walk_index(c, NULL, dump_znode, NULL);
}
@@ -1120,15 +1118,15 @@
out:
ubifs_msg("saved lprops statistics dump");
- dbg_dump_lstats(&d->saved_lst);
+ ubifs_dump_lstats(&d->saved_lst);
ubifs_msg("saved budgeting info dump");
- dbg_dump_budg(c, &d->saved_bi);
+ ubifs_dump_budg(c, &d->saved_bi);
ubifs_msg("saved idx_gc_cnt %d", d->saved_idx_gc_cnt);
ubifs_msg("current lprops statistics dump");
ubifs_get_lp_stats(c, &lst);
- dbg_dump_lstats(&lst);
+ ubifs_dump_lstats(&lst);
ubifs_msg("current budgeting info dump");
- dbg_dump_budg(c, &c->bi);
+ ubifs_dump_budg(c, &c->bi);
dump_stack();
return -EINVAL;
}
@@ -1160,7 +1158,7 @@
"is clean", ui->ui_size, ui->synced_i_size);
ubifs_err("i_ino %lu, i_mode %#x, i_size %lld", inode->i_ino,
inode->i_mode, i_size_read(inode));
- dbg_dump_stack();
+ dump_stack();
err = -EINVAL;
}
spin_unlock(&ui->ui_lock);
@@ -1223,14 +1221,14 @@
"but calculated size is %llu", dir->i_ino,
(unsigned long long)i_size_read(dir),
(unsigned long long)size);
- dbg_dump_inode(c, dir);
+ ubifs_dump_inode(c, dir);
dump_stack();
return -EINVAL;
}
if (dir->i_nlink != nlink) {
ubifs_err("directory inode %lu has nlink %u, but calculated "
"nlink is %u", dir->i_ino, dir->i_nlink, nlink);
- dbg_dump_inode(c, dir);
+ ubifs_dump_inode(c, dir);
dump_stack();
return -EINVAL;
}
@@ -1287,25 +1285,25 @@
err = 1;
key_read(c, &dent1->key, &key);
if (keys_cmp(c, &zbr1->key, &key)) {
- dbg_err("1st entry at %d:%d has key %s", zbr1->lnum,
- zbr1->offs, dbg_snprintf_key(c, &key, key_buf,
- DBG_KEY_BUF_LEN));
- dbg_err("but it should have key %s according to tnc",
- dbg_snprintf_key(c, &zbr1->key, key_buf,
- DBG_KEY_BUF_LEN));
- dbg_dump_node(c, dent1);
+ ubifs_err("1st entry at %d:%d has key %s", zbr1->lnum,
+ zbr1->offs, dbg_snprintf_key(c, &key, key_buf,
+ DBG_KEY_BUF_LEN));
+ ubifs_err("but it should have key %s according to tnc",
+ dbg_snprintf_key(c, &zbr1->key, key_buf,
+ DBG_KEY_BUF_LEN));
+ ubifs_dump_node(c, dent1);
goto out_free;
}
key_read(c, &dent2->key, &key);
if (keys_cmp(c, &zbr2->key, &key)) {
- dbg_err("2nd entry at %d:%d has key %s", zbr1->lnum,
- zbr1->offs, dbg_snprintf_key(c, &key, key_buf,
- DBG_KEY_BUF_LEN));
- dbg_err("but it should have key %s according to tnc",
- dbg_snprintf_key(c, &zbr2->key, key_buf,
- DBG_KEY_BUF_LEN));
- dbg_dump_node(c, dent2);
+ ubifs_err("2nd entry at %d:%d has key %s", zbr1->lnum,
+ zbr1->offs, dbg_snprintf_key(c, &key, key_buf,
+ DBG_KEY_BUF_LEN));
+ ubifs_err("but it should have key %s according to tnc",
+ dbg_snprintf_key(c, &zbr2->key, key_buf,
+ DBG_KEY_BUF_LEN));
+ ubifs_dump_node(c, dent2);
goto out_free;
}
@@ -1318,15 +1316,15 @@
goto out_free;
}
if (cmp == 0 && nlen1 == nlen2)
- dbg_err("2 xent/dent nodes with the same name");
+ ubifs_err("2 xent/dent nodes with the same name");
else
- dbg_err("bad order of colliding key %s",
- dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN));
+ ubifs_err("bad order of colliding key %s",
+ dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN));
ubifs_msg("first node at %d:%d\n", zbr1->lnum, zbr1->offs);
- dbg_dump_node(c, dent1);
+ ubifs_dump_node(c, dent1);
ubifs_msg("second node at %d:%d\n", zbr2->lnum, zbr2->offs);
- dbg_dump_node(c, dent2);
+ ubifs_dump_node(c, dent2);
out_free:
kfree(dent2);
@@ -1529,10 +1527,10 @@
out:
ubifs_err("failed, error %d", err);
ubifs_msg("dump of the znode");
- dbg_dump_znode(c, znode);
+ ubifs_dump_znode(c, znode);
if (zp) {
ubifs_msg("dump of the parent znode");
- dbg_dump_znode(c, zp);
+ ubifs_dump_znode(c, zp);
}
dump_stack();
return -EINVAL;
@@ -1599,9 +1597,9 @@
return err;
if (err) {
ubifs_msg("first znode");
- dbg_dump_znode(c, prev);
+ ubifs_dump_znode(c, prev);
ubifs_msg("second znode");
- dbg_dump_znode(c, znode);
+ ubifs_dump_znode(c, znode);
return -EINVAL;
}
}
@@ -1690,7 +1688,7 @@
if (err) {
ubifs_err("znode checking function returned "
"error %d", err);
- dbg_dump_znode(c, znode);
+ ubifs_dump_znode(c, znode);
goto out_dump;
}
}
@@ -1758,7 +1756,7 @@
else
zbr = &c->zroot;
ubifs_msg("dump of znode at LEB %d:%d", zbr->lnum, zbr->offs);
- dbg_dump_znode(c, znode);
+ ubifs_dump_znode(c, znode);
out_unlock:
mutex_unlock(&c->tnc_mutex);
return err;
@@ -2194,7 +2192,7 @@
out_dump:
ubifs_msg("dump of node at LEB %d:%d", zbr->lnum, zbr->offs);
- dbg_dump_node(c, node);
+ ubifs_dump_node(c, node);
out_free:
kfree(node);
return err;
@@ -2352,7 +2350,7 @@
ubifs_msg("dump of the inode %lu sitting in LEB %d:%d",
(unsigned long)fscki->inum, zbr->lnum, zbr->offs);
- dbg_dump_node(c, ino);
+ ubifs_dump_node(c, ino);
kfree(ino);
return -EINVAL;
}
@@ -2423,12 +2421,12 @@
if (sa->type != UBIFS_DATA_NODE) {
ubifs_err("bad node type %d", sa->type);
- dbg_dump_node(c, sa->node);
+ ubifs_dump_node(c, sa->node);
return -EINVAL;
}
if (sb->type != UBIFS_DATA_NODE) {
ubifs_err("bad node type %d", sb->type);
- dbg_dump_node(c, sb->node);
+ ubifs_dump_node(c, sb->node);
return -EINVAL;
}
@@ -2459,8 +2457,8 @@
return 0;
error_dump:
- dbg_dump_node(c, sa->node);
- dbg_dump_node(c, sb->node);
+ ubifs_dump_node(c, sa->node);
+ ubifs_dump_node(c, sb->node);
return -EINVAL;
}
@@ -2491,13 +2489,13 @@
if (sa->type != UBIFS_INO_NODE && sa->type != UBIFS_DENT_NODE &&
sa->type != UBIFS_XENT_NODE) {
ubifs_err("bad node type %d", sa->type);
- dbg_dump_node(c, sa->node);
+ ubifs_dump_node(c, sa->node);
return -EINVAL;
}
if (sa->type != UBIFS_INO_NODE && sa->type != UBIFS_DENT_NODE &&
sa->type != UBIFS_XENT_NODE) {
ubifs_err("bad node type %d", sb->type);
- dbg_dump_node(c, sb->node);
+ ubifs_dump_node(c, sb->node);
return -EINVAL;
}
@@ -2547,9 +2545,9 @@
error_dump:
ubifs_msg("dumping first node");
- dbg_dump_node(c, sa->node);
+ ubifs_dump_node(c, sa->node);
ubifs_msg("dumping second node");
- dbg_dump_node(c, sb->node);
+ ubifs_dump_node(c, sb->node);
return -EINVAL;
return 0;
}
@@ -2678,7 +2676,7 @@
}
int dbg_leb_write(struct ubifs_info *c, int lnum, const void *buf,
- int offs, int len, int dtype)
+ int offs, int len)
{
int err, failing;
@@ -2688,7 +2686,7 @@
failing = power_cut_emulated(c, lnum, 1);
if (failing)
cut_data(buf, len);
- err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype);
+ err = ubi_leb_write(c->ubi, lnum, buf, offs, len);
if (err)
return err;
if (failing)
@@ -2697,7 +2695,7 @@
}
int dbg_leb_change(struct ubifs_info *c, int lnum, const void *buf,
- int len, int dtype)
+ int len)
{
int err;
@@ -2705,7 +2703,7 @@
return -EROFS;
if (power_cut_emulated(c, lnum, 1))
return -EROFS;
- err = ubi_leb_change(c->ubi, lnum, buf, len, dtype);
+ err = ubi_leb_change(c->ubi, lnum, buf, len);
if (err)
return err;
if (power_cut_emulated(c, lnum, 1))
@@ -2729,7 +2727,7 @@
return 0;
}
-int dbg_leb_map(struct ubifs_info *c, int lnum, int dtype)
+int dbg_leb_map(struct ubifs_info *c, int lnum)
{
int err;
@@ -2737,7 +2735,7 @@
return -EROFS;
if (power_cut_emulated(c, lnum, 0))
return -EROFS;
- err = ubi_leb_map(c->ubi, lnum, dtype);
+ err = ubi_leb_map(c->ubi, lnum);
if (err)
return err;
if (power_cut_emulated(c, lnum, 0))
@@ -2857,16 +2855,16 @@
* 'ubifs-debug' file-system instead.
*/
if (file->f_path.dentry == d->dfs_dump_lprops) {
- dbg_dump_lprops(c);
+ ubifs_dump_lprops(c);
return count;
}
if (file->f_path.dentry == d->dfs_dump_budg) {
- dbg_dump_budg(c, &c->bi);
+ ubifs_dump_budg(c, &c->bi);
return count;
}
if (file->f_path.dentry == d->dfs_dump_tnc) {
mutex_lock(&c->tnc_mutex);
- dbg_dump_tnc(c);
+ ubifs_dump_tnc(c);
mutex_unlock(&c->tnc_mutex);
return count;
}
@@ -3189,5 +3187,3 @@
{
kfree(c->dbg);
}
-
-#endif /* CONFIG_UBIFS_FS_DEBUG */
diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h
index 9f71765..486a8e0 100644
--- a/fs/ubifs/debug.h
+++ b/fs/ubifs/debug.h
@@ -29,8 +29,6 @@
typedef int (*dbg_znode_callback)(struct ubifs_info *c,
struct ubifs_znode *znode, void *priv);
-#ifdef CONFIG_UBIFS_FS_DEBUG
-
/*
* The UBIFS debugfs directory name pattern and maximum name length (3 for "ubi"
* + 1 for "_" and plus 2x2 for 2 UBI numbers and 1 for the trailing zero byte.
@@ -149,7 +147,7 @@
if (unlikely(!(expr))) { \
printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
__func__, __LINE__, current->pid); \
- dbg_dump_stack(); \
+ dump_stack(); \
} \
} while (0)
@@ -161,12 +159,6 @@
} \
} while (0)
-#define dbg_dump_stack() dump_stack()
-
-#define dbg_err(fmt, ...) do { \
- ubifs_err(fmt, ##__VA_ARGS__); \
-} while (0)
-
#define ubifs_dbg_msg(type, fmt, ...) \
pr_debug("UBIFS DBG " type ": " fmt "\n", ##__VA_ARGS__)
@@ -257,27 +249,27 @@
const union ubifs_key *key);
const char *dbg_snprintf_key(const struct ubifs_info *c,
const union ubifs_key *key, char *buffer, int len);
-void dbg_dump_inode(struct ubifs_info *c, const struct inode *inode);
-void dbg_dump_node(const struct ubifs_info *c, const void *node);
-void dbg_dump_lpt_node(const struct ubifs_info *c, void *node, int lnum,
- int offs);
-void dbg_dump_budget_req(const struct ubifs_budget_req *req);
-void dbg_dump_lstats(const struct ubifs_lp_stats *lst);
-void dbg_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi);
-void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp);
-void dbg_dump_lprops(struct ubifs_info *c);
-void dbg_dump_lpt_info(struct ubifs_info *c);
-void dbg_dump_leb(const struct ubifs_info *c, int lnum);
-void dbg_dump_sleb(const struct ubifs_info *c,
- const struct ubifs_scan_leb *sleb, int offs);
-void dbg_dump_znode(const struct ubifs_info *c,
- const struct ubifs_znode *znode);
-void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat);
-void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
- struct ubifs_nnode *parent, int iip);
-void dbg_dump_tnc(struct ubifs_info *c);
-void dbg_dump_index(struct ubifs_info *c);
-void dbg_dump_lpt_lebs(const struct ubifs_info *c);
+void ubifs_dump_inode(struct ubifs_info *c, const struct inode *inode);
+void ubifs_dump_node(const struct ubifs_info *c, const void *node);
+void ubifs_dump_budget_req(const struct ubifs_budget_req *req);
+void ubifs_dump_lstats(const struct ubifs_lp_stats *lst);
+void ubifs_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi);
+void ubifs_dump_lprop(const struct ubifs_info *c,
+ const struct ubifs_lprops *lp);
+void ubifs_dump_lprops(struct ubifs_info *c);
+void ubifs_dump_lpt_info(struct ubifs_info *c);
+void ubifs_dump_leb(const struct ubifs_info *c, int lnum);
+void ubifs_dump_sleb(const struct ubifs_info *c,
+ const struct ubifs_scan_leb *sleb, int offs);
+void ubifs_dump_znode(const struct ubifs_info *c,
+ const struct ubifs_znode *znode);
+void ubifs_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap,
+ int cat);
+void ubifs_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
+ struct ubifs_nnode *parent, int iip);
+void ubifs_dump_tnc(struct ubifs_info *c);
+void ubifs_dump_index(struct ubifs_info *c);
+void ubifs_dump_lpt_lebs(const struct ubifs_info *c);
int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
dbg_znode_callback znode_cb, void *priv);
@@ -307,11 +299,10 @@
int dbg_check_nondata_nodes_order(struct ubifs_info *c, struct list_head *head);
int dbg_leb_write(struct ubifs_info *c, int lnum, const void *buf, int offs,
- int len, int dtype);
-int dbg_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len,
- int dtype);
+ int len);
+int dbg_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len);
int dbg_leb_unmap(struct ubifs_info *c, int lnum);
-int dbg_leb_map(struct ubifs_info *c, int lnum, int dtype);
+int dbg_leb_map(struct ubifs_info *c, int lnum);
/* Debugfs-related stuff */
int dbg_debugfs_init(void);
@@ -319,162 +310,4 @@
int dbg_debugfs_init_fs(struct ubifs_info *c);
void dbg_debugfs_exit_fs(struct ubifs_info *c);
-#else /* !CONFIG_UBIFS_FS_DEBUG */
-
-/* Use "if (0)" to make compiler check arguments even if debugging is off */
-#define ubifs_assert(expr) do { \
- if (0) \
- printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
- __func__, __LINE__, current->pid); \
-} while (0)
-
-#define dbg_err(fmt, ...) do { \
- if (0) \
- ubifs_err(fmt, ##__VA_ARGS__); \
-} while (0)
-
-#define DBGKEY(key) ((char *)(key))
-#define DBGKEY1(key) ((char *)(key))
-
-#define ubifs_dbg_msg(fmt, ...) do { \
- if (0) \
- printk(KERN_DEBUG fmt "\n", ##__VA_ARGS__); \
-} while (0)
-
-#define dbg_dump_stack()
-#define ubifs_assert_cmt_locked(c)
-
-#define dbg_msg(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_gen(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_jnl(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_jnlk(key, fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_tnc(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_tnck(key, fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_lp(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_find(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_mnt(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_mntk(key, fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_io(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_cmt(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_budg(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_log(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_gc(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_scan(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_rcvry(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
-
-static inline int ubifs_debugging_init(struct ubifs_info *c) { return 0; }
-static inline void ubifs_debugging_exit(struct ubifs_info *c) { return; }
-static inline const char *dbg_ntype(int type) { return ""; }
-static inline const char *dbg_cstate(int cmt_state) { return ""; }
-static inline const char *dbg_jhead(int jhead) { return ""; }
-static inline const char *
-dbg_get_key_dump(const struct ubifs_info *c,
- const union ubifs_key *key) { return ""; }
-static inline const char *
-dbg_snprintf_key(const struct ubifs_info *c,
- const union ubifs_key *key, char *buffer,
- int len) { return ""; }
-static inline void dbg_dump_inode(struct ubifs_info *c,
- const struct inode *inode) { return; }
-static inline void dbg_dump_node(const struct ubifs_info *c,
- const void *node) { return; }
-static inline void dbg_dump_lpt_node(const struct ubifs_info *c,
- void *node, int lnum,
- int offs) { return; }
-static inline void
-dbg_dump_budget_req(const struct ubifs_budget_req *req) { return; }
-static inline void
-dbg_dump_lstats(const struct ubifs_lp_stats *lst) { return; }
-static inline void
-dbg_dump_budg(struct ubifs_info *c,
- const struct ubifs_budg_info *bi) { return; }
-static inline void dbg_dump_lprop(const struct ubifs_info *c,
- const struct ubifs_lprops *lp) { return; }
-static inline void dbg_dump_lprops(struct ubifs_info *c) { return; }
-static inline void dbg_dump_lpt_info(struct ubifs_info *c) { return; }
-static inline void dbg_dump_leb(const struct ubifs_info *c,
- int lnum) { return; }
-static inline void
-dbg_dump_sleb(const struct ubifs_info *c,
- const struct ubifs_scan_leb *sleb, int offs) { return; }
-static inline void
-dbg_dump_znode(const struct ubifs_info *c,
- const struct ubifs_znode *znode) { return; }
-static inline void dbg_dump_heap(struct ubifs_info *c,
- struct ubifs_lpt_heap *heap,
- int cat) { return; }
-static inline void dbg_dump_pnode(struct ubifs_info *c,
- struct ubifs_pnode *pnode,
- struct ubifs_nnode *parent,
- int iip) { return; }
-static inline void dbg_dump_tnc(struct ubifs_info *c) { return; }
-static inline void dbg_dump_index(struct ubifs_info *c) { return; }
-static inline void dbg_dump_lpt_lebs(const struct ubifs_info *c) { return; }
-
-static inline int dbg_walk_index(struct ubifs_info *c,
- dbg_leaf_callback leaf_cb,
- dbg_znode_callback znode_cb,
- void *priv) { return 0; }
-static inline void dbg_save_space_info(struct ubifs_info *c) { return; }
-static inline int dbg_check_space_info(struct ubifs_info *c) { return 0; }
-static inline int dbg_check_lprops(struct ubifs_info *c) { return 0; }
-static inline int
-dbg_old_index_check_init(struct ubifs_info *c,
- struct ubifs_zbranch *zroot) { return 0; }
-static inline int
-dbg_check_old_index(struct ubifs_info *c,
- struct ubifs_zbranch *zroot) { return 0; }
-static inline int dbg_check_cats(struct ubifs_info *c) { return 0; }
-static inline int dbg_check_ltab(struct ubifs_info *c) { return 0; }
-static inline int dbg_chk_lpt_free_spc(struct ubifs_info *c) { return 0; }
-static inline int dbg_chk_lpt_sz(struct ubifs_info *c,
- int action, int len) { return 0; }
-static inline int
-dbg_check_synced_i_size(const struct ubifs_info *c,
- struct inode *inode) { return 0; }
-static inline int dbg_check_dir(struct ubifs_info *c,
- const struct inode *dir) { return 0; }
-static inline int dbg_check_tnc(struct ubifs_info *c, int extra) { return 0; }
-static inline int dbg_check_idx_size(struct ubifs_info *c,
- long long idx_size) { return 0; }
-static inline int dbg_check_filesystem(struct ubifs_info *c) { return 0; }
-static inline void dbg_check_heap(struct ubifs_info *c,
- struct ubifs_lpt_heap *heap,
- int cat, int add_pos) { return; }
-static inline int dbg_check_lpt_nodes(struct ubifs_info *c,
- struct ubifs_cnode *cnode, int row, int col) { return 0; }
-static inline int dbg_check_inode_size(struct ubifs_info *c,
- const struct inode *inode,
- loff_t size) { return 0; }
-static inline int
-dbg_check_data_nodes_order(struct ubifs_info *c,
- struct list_head *head) { return 0; }
-static inline int
-dbg_check_nondata_nodes_order(struct ubifs_info *c,
- struct list_head *head) { return 0; }
-
-static inline int dbg_leb_write(struct ubifs_info *c, int lnum,
- const void *buf, int offset,
- int len, int dtype) { return 0; }
-static inline int dbg_leb_change(struct ubifs_info *c, int lnum,
- const void *buf, int len,
- int dtype) { return 0; }
-static inline int dbg_leb_unmap(struct ubifs_info *c, int lnum) { return 0; }
-static inline int dbg_leb_map(struct ubifs_info *c, int lnum,
- int dtype) { return 0; }
-
-static inline int dbg_is_chk_gen(const struct ubifs_info *c) { return 0; }
-static inline int dbg_is_chk_index(const struct ubifs_info *c) { return 0; }
-static inline int dbg_is_chk_orph(const struct ubifs_info *c) { return 0; }
-static inline int dbg_is_chk_lprops(const struct ubifs_info *c) { return 0; }
-static inline int dbg_is_chk_fs(const struct ubifs_info *c) { return 0; }
-static inline int dbg_is_tst_rcvry(const struct ubifs_info *c) { return 0; }
-static inline int dbg_is_power_cut(const struct ubifs_info *c) { return 0; }
-
-static inline int dbg_debugfs_init(void) { return 0; }
-static inline void dbg_debugfs_exit(void) { return; }
-static inline int dbg_debugfs_init_fs(struct ubifs_info *c) { return 0; }
-static inline int dbg_debugfs_exit_fs(struct ubifs_info *c) { return 0; }
-
-#endif /* !CONFIG_UBIFS_FS_DEBUG */
#endif /* !__UBIFS_DEBUG_H__ */
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index ec9f187..62a2727 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -170,8 +170,6 @@
return inode;
}
-#ifdef CONFIG_UBIFS_FS_DEBUG
-
static int dbg_check_name(const struct ubifs_info *c,
const struct ubifs_dent_node *dent,
const struct qstr *nm)
@@ -185,12 +183,6 @@
return 0;
}
-#else
-
-#define dbg_check_name(c, dent, nm) 0
-
-#endif
-
static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
{
@@ -1187,12 +1179,10 @@
.rename = ubifs_rename,
.setattr = ubifs_setattr,
.getattr = ubifs_getattr,
-#ifdef CONFIG_UBIFS_FS_XATTR
.setxattr = ubifs_setxattr,
.getxattr = ubifs_getxattr,
.listxattr = ubifs_listxattr,
.removexattr = ubifs_removexattr,
-#endif
};
const struct file_operations ubifs_dir_operations = {
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 5c8f6dc..35389ca 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -97,7 +97,7 @@
dump:
ubifs_err("bad data node (block %u, inode %lu)",
block, inode->i_ino);
- dbg_dump_node(c, dn);
+ ubifs_dump_node(c, dn);
return -EINVAL;
}
@@ -1562,12 +1562,10 @@
const struct inode_operations ubifs_file_inode_operations = {
.setattr = ubifs_setattr,
.getattr = ubifs_getattr,
-#ifdef CONFIG_UBIFS_FS_XATTR
.setxattr = ubifs_setxattr,
.getxattr = ubifs_getxattr,
.listxattr = ubifs_listxattr,
.removexattr = ubifs_removexattr,
-#endif
};
const struct inode_operations ubifs_symlink_inode_operations = {
diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c
index ded29f6..04dd6f4 100644
--- a/fs/ubifs/gc.c
+++ b/fs/ubifs/gc.c
@@ -109,7 +109,7 @@
return err;
c->gc_lnum = -1;
- err = ubifs_wbuf_seek_nolock(wbuf, gc_lnum, 0, UBI_LONGTERM);
+ err = ubifs_wbuf_seek_nolock(wbuf, gc_lnum, 0);
return err;
}
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index 9228950a..e18b988 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -109,13 +109,13 @@
if (err && (err != -EBADMSG || even_ebadmsg)) {
ubifs_err("reading %d bytes from LEB %d:%d failed, error %d",
len, lnum, offs, err);
- dbg_dump_stack();
+ dump_stack();
}
return err;
}
int ubifs_leb_write(struct ubifs_info *c, int lnum, const void *buf, int offs,
- int len, int dtype)
+ int len)
{
int err;
@@ -123,20 +123,19 @@
if (c->ro_error)
return -EROFS;
if (!dbg_is_tst_rcvry(c))
- err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype);
+ err = ubi_leb_write(c->ubi, lnum, buf, offs, len);
else
- err = dbg_leb_write(c, lnum, buf, offs, len, dtype);
+ err = dbg_leb_write(c, lnum, buf, offs, len);
if (err) {
ubifs_err("writing %d bytes to LEB %d:%d failed, error %d",
len, lnum, offs, err);
ubifs_ro_mode(c, err);
- dbg_dump_stack();
+ dump_stack();
}
return err;
}
-int ubifs_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len,
- int dtype)
+int ubifs_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len)
{
int err;
@@ -144,14 +143,14 @@
if (c->ro_error)
return -EROFS;
if (!dbg_is_tst_rcvry(c))
- err = ubi_leb_change(c->ubi, lnum, buf, len, dtype);
+ err = ubi_leb_change(c->ubi, lnum, buf, len);
else
- err = dbg_leb_change(c, lnum, buf, len, dtype);
+ err = dbg_leb_change(c, lnum, buf, len);
if (err) {
ubifs_err("changing %d bytes in LEB %d failed, error %d",
len, lnum, err);
ubifs_ro_mode(c, err);
- dbg_dump_stack();
+ dump_stack();
}
return err;
}
@@ -170,12 +169,12 @@
if (err) {
ubifs_err("unmap LEB %d failed, error %d", lnum, err);
ubifs_ro_mode(c, err);
- dbg_dump_stack();
+ dump_stack();
}
return err;
}
-int ubifs_leb_map(struct ubifs_info *c, int lnum, int dtype)
+int ubifs_leb_map(struct ubifs_info *c, int lnum)
{
int err;
@@ -183,13 +182,13 @@
if (c->ro_error)
return -EROFS;
if (!dbg_is_tst_rcvry(c))
- err = ubi_leb_map(c->ubi, lnum, dtype);
+ err = ubi_leb_map(c->ubi, lnum);
else
- err = dbg_leb_map(c, lnum, dtype);
+ err = dbg_leb_map(c, lnum);
if (err) {
ubifs_err("mapping LEB %d failed, error %d", lnum, err);
ubifs_ro_mode(c, err);
- dbg_dump_stack();
+ dump_stack();
}
return err;
}
@@ -202,7 +201,7 @@
if (err < 0) {
ubifs_err("ubi_is_mapped failed for LEB %d, error %d",
lnum, err);
- dbg_dump_stack();
+ dump_stack();
}
return err;
}
@@ -294,8 +293,8 @@
out:
if (!quiet) {
ubifs_err("bad node at LEB %d:%d", lnum, offs);
- dbg_dump_node(c, buf);
- dbg_dump_stack();
+ ubifs_dump_node(c, buf);
+ dump_stack();
}
return err;
}
@@ -523,8 +522,7 @@
dirt = sync_len - wbuf->used;
if (dirt)
ubifs_pad(c, wbuf->buf + wbuf->used, dirt);
- err = ubifs_leb_write(c, wbuf->lnum, wbuf->buf, wbuf->offs, sync_len,
- wbuf->dtype);
+ err = ubifs_leb_write(c, wbuf->lnum, wbuf->buf, wbuf->offs, sync_len);
if (err)
return err;
@@ -562,14 +560,12 @@
* @wbuf: write-buffer
* @lnum: logical eraseblock number to seek to
* @offs: logical eraseblock offset to seek to
- * @dtype: data type
*
* This function targets the write-buffer to logical eraseblock @lnum:@offs.
* The write-buffer has to be empty. Returns zero in case of success and a
* negative error code in case of failure.
*/
-int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs,
- int dtype)
+int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs)
{
const struct ubifs_info *c = wbuf->c;
@@ -592,7 +588,6 @@
wbuf->avail = wbuf->size;
wbuf->used = 0;
spin_unlock(&wbuf->lock);
- wbuf->dtype = dtype;
return 0;
}
@@ -719,8 +714,7 @@
dbg_io("flush jhead %s wbuf to LEB %d:%d",
dbg_jhead(wbuf->jhead), wbuf->lnum, wbuf->offs);
err = ubifs_leb_write(c, wbuf->lnum, wbuf->buf,
- wbuf->offs, wbuf->size,
- wbuf->dtype);
+ wbuf->offs, wbuf->size);
if (err)
goto out;
@@ -756,7 +750,7 @@
dbg_jhead(wbuf->jhead), wbuf->lnum, wbuf->offs);
memcpy(wbuf->buf + wbuf->used, buf, wbuf->avail);
err = ubifs_leb_write(c, wbuf->lnum, wbuf->buf, wbuf->offs,
- wbuf->size, wbuf->dtype);
+ wbuf->size);
if (err)
goto out;
@@ -775,7 +769,7 @@
dbg_io("write %d bytes to LEB %d:%d",
wbuf->size, wbuf->lnum, wbuf->offs);
err = ubifs_leb_write(c, wbuf->lnum, buf, wbuf->offs,
- wbuf->size, wbuf->dtype);
+ wbuf->size);
if (err)
goto out;
@@ -797,7 +791,7 @@
dbg_io("write %d bytes to LEB %d:%d", n, wbuf->lnum,
wbuf->offs);
err = ubifs_leb_write(c, wbuf->lnum, buf + written,
- wbuf->offs, n, wbuf->dtype);
+ wbuf->offs, n);
if (err)
goto out;
wbuf->offs += n;
@@ -841,9 +835,9 @@
out:
ubifs_err("cannot write %d bytes to LEB %d:%d, error %d",
len, wbuf->lnum, wbuf->offs, err);
- dbg_dump_node(c, buf);
- dbg_dump_stack();
- dbg_dump_leb(c, wbuf->lnum);
+ ubifs_dump_node(c, buf);
+ dump_stack();
+ ubifs_dump_leb(c, wbuf->lnum);
return err;
}
@@ -854,7 +848,6 @@
* @len: node length
* @lnum: logical eraseblock number
* @offs: offset within the logical eraseblock
- * @dtype: node life-time hint (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN)
*
* This function automatically fills node magic number, assigns sequence
* number, and calculates node CRC checksum. The length of the @buf buffer has
@@ -863,7 +856,7 @@
* success and a negative error code in case of failure.
*/
int ubifs_write_node(struct ubifs_info *c, void *buf, int len, int lnum,
- int offs, int dtype)
+ int offs)
{
int err, buf_len = ALIGN(len, c->min_io_size);
@@ -879,9 +872,9 @@
return -EROFS;
ubifs_prepare_node(c, buf, len, 1);
- err = ubifs_leb_write(c, lnum, buf, offs, buf_len, dtype);
+ err = ubifs_leb_write(c, lnum, buf, offs, buf_len);
if (err)
- dbg_dump_node(c, buf);
+ ubifs_dump_node(c, buf);
return err;
}
@@ -960,8 +953,8 @@
out:
ubifs_err("bad node at LEB %d:%d", lnum, offs);
- dbg_dump_node(c, buf);
- dbg_dump_stack();
+ ubifs_dump_node(c, buf);
+ dump_stack();
return -EINVAL;
}
@@ -1017,8 +1010,8 @@
out:
ubifs_err("bad node at LEB %d:%d, LEB mapping status %d", lnum, offs,
ubi_is_mapped(c->ubi, lnum));
- dbg_dump_node(c, buf);
- dbg_dump_stack();
+ ubifs_dump_node(c, buf);
+ dump_stack();
return -EINVAL;
}
@@ -1056,7 +1049,6 @@
*/
size = c->max_write_size - (c->leb_start % c->max_write_size);
wbuf->avail = wbuf->size = size;
- wbuf->dtype = UBI_UNKNOWN;
wbuf->sync_callback = NULL;
mutex_init(&wbuf->io_mutex);
spin_lock_init(&wbuf->lock);
diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index 2f438ab..12c0f15 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -214,7 +214,7 @@
err = ubifs_add_bud_to_log(c, jhead, lnum, offs);
if (err)
goto out_return;
- err = ubifs_wbuf_seek_nolock(wbuf, lnum, offs, wbuf->dtype);
+ err = ubifs_wbuf_seek_nolock(wbuf, lnum, offs);
if (err)
goto out_unlock;
@@ -385,9 +385,9 @@
if (err == -ENOSPC) {
/* This are some budgeting problems, print useful information */
down_write(&c->commit_sem);
- dbg_dump_stack();
- dbg_dump_budg(c, &c->bi);
- dbg_dump_lprops(c);
+ dump_stack();
+ ubifs_dump_budg(c, &c->bi);
+ ubifs_dump_lprops(c);
cmt_retries = dbg_check_lprops(c);
up_write(&c->commit_sem);
}
@@ -1267,7 +1267,6 @@
return err;
}
-#ifdef CONFIG_UBIFS_FS_XATTR
/**
* ubifs_jnl_delete_xattr - delete an extended attribute.
@@ -1462,4 +1461,3 @@
return err;
}
-#endif /* CONFIG_UBIFS_FS_XATTR */
diff --git a/fs/ubifs/log.c b/fs/ubifs/log.c
index f9fd068..c80b15d 100644
--- a/fs/ubifs/log.c
+++ b/fs/ubifs/log.c
@@ -29,11 +29,7 @@
#include "ubifs.h"
-#ifdef CONFIG_UBIFS_FS_DEBUG
static int dbg_check_bud_bytes(struct ubifs_info *c);
-#else
-#define dbg_check_bud_bytes(c) 0
-#endif
/**
* ubifs_search_bud - search bud LEB.
@@ -262,7 +258,7 @@
* an unclean reboot, because the target LEB might have been
* unmapped, but not yet physically erased.
*/
- err = ubifs_leb_map(c, bud->lnum, UBI_SHORTTERM);
+ err = ubifs_leb_map(c, bud->lnum);
if (err)
goto out_unlock;
}
@@ -270,7 +266,7 @@
dbg_log("write ref LEB %d:%d",
c->lhead_lnum, c->lhead_offs);
err = ubifs_write_node(c, ref, UBIFS_REF_NODE_SZ, c->lhead_lnum,
- c->lhead_offs, UBI_SHORTTERM);
+ c->lhead_offs);
if (err)
goto out_unlock;
@@ -422,7 +418,7 @@
len = ALIGN(len, c->min_io_size);
dbg_log("writing commit start at LEB %d:0, len %d", c->lhead_lnum, len);
- err = ubifs_leb_write(c, c->lhead_lnum, cs, 0, len, UBI_SHORTTERM);
+ err = ubifs_leb_write(c, c->lhead_lnum, cs, 0, len);
if (err)
goto out;
@@ -623,7 +619,7 @@
int sz = ALIGN(*offs, c->min_io_size), err;
ubifs_pad(c, buf + *offs, sz - *offs);
- err = ubifs_leb_change(c, *lnum, buf, sz, UBI_SHORTTERM);
+ err = ubifs_leb_change(c, *lnum, buf, sz);
if (err)
return err;
*lnum = ubifs_next_log_lnum(c, *lnum);
@@ -702,7 +698,7 @@
int sz = ALIGN(offs, c->min_io_size);
ubifs_pad(c, buf + offs, sz - offs);
- err = ubifs_leb_change(c, write_lnum, buf, sz, UBI_SHORTTERM);
+ err = ubifs_leb_change(c, write_lnum, buf, sz);
if (err)
goto out_free;
offs = ALIGN(offs, c->min_io_size);
@@ -734,8 +730,6 @@
return err;
}
-#ifdef CONFIG_UBIFS_FS_DEBUG
-
/**
* dbg_check_bud_bytes - make sure bud bytes calculation are all right.
* @c: UBIFS file-system description object
@@ -767,5 +761,3 @@
return err;
}
-
-#endif /* CONFIG_UBIFS_FS_DEBUG */
diff --git a/fs/ubifs/lprops.c b/fs/ubifs/lprops.c
index f8a181e..86eb8e5 100644
--- a/fs/ubifs/lprops.c
+++ b/fs/ubifs/lprops.c
@@ -447,7 +447,7 @@
int new_cat = ubifs_categorize_lprops(c, lprops);
if (old_cat == new_cat) {
- struct ubifs_lpt_heap *heap = &c->lpt_heap[new_cat - 1];
+ struct ubifs_lpt_heap *heap;
/* lprops on a heap now must be moved up or down */
if (new_cat < 1 || new_cat > LPROPS_HEAP_CNT)
@@ -846,7 +846,9 @@
return lprops;
}
-#ifdef CONFIG_UBIFS_FS_DEBUG
+/*
+ * Everything below is related to debugging.
+ */
/**
* dbg_check_cats - check category heaps and lists.
@@ -1001,8 +1003,8 @@
out:
if (err) {
dbg_msg("failed cat %d hpos %d err %d", cat, i, err);
- dbg_dump_stack();
- dbg_dump_heap(c, heap, cat);
+ dump_stack();
+ ubifs_dump_heap(c, heap, cat);
}
}
@@ -1109,8 +1111,8 @@
if (IS_ERR(sleb)) {
ret = PTR_ERR(sleb);
if (ret == -EUCLEAN) {
- dbg_dump_lprops(c);
- dbg_dump_budg(c, &c->bi);
+ ubifs_dump_lprops(c);
+ ubifs_dump_budg(c, &c->bi);
}
goto out;
}
@@ -1237,7 +1239,7 @@
ubifs_err("bad accounting of LEB %d: free %d, dirty %d flags %#x, "
"should be free %d, dirty %d",
lnum, lp->free, lp->dirty, lp->flags, free, dirty);
- dbg_dump_leb(c, lnum);
+ ubifs_dump_leb(c, lnum);
out_destroy:
ubifs_scan_destroy(sleb);
ret = -EINVAL;
@@ -1315,5 +1317,3 @@
out:
return err;
}
-
-#endif /* CONFIG_UBIFS_FS_DEBUG */
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index 66d59d0..ce33b2b 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -701,8 +701,7 @@
alen = ALIGN(len, c->min_io_size);
set_ltab(c, lnum, c->leb_size - alen, alen - len);
memset(p, 0xff, alen - len);
- err = ubifs_leb_change(c, lnum++, buf, alen,
- UBI_SHORTTERM);
+ err = ubifs_leb_change(c, lnum++, buf, alen);
if (err)
goto out;
p = buf;
@@ -732,8 +731,7 @@
set_ltab(c, lnum, c->leb_size - alen,
alen - len);
memset(p, 0xff, alen - len);
- err = ubifs_leb_change(c, lnum++, buf, alen,
- UBI_SHORTTERM);
+ err = ubifs_leb_change(c, lnum++, buf, alen);
if (err)
goto out;
p = buf;
@@ -780,8 +778,7 @@
alen = ALIGN(len, c->min_io_size);
set_ltab(c, lnum, c->leb_size - alen, alen - len);
memset(p, 0xff, alen - len);
- err = ubifs_leb_change(c, lnum++, buf, alen,
- UBI_SHORTTERM);
+ err = ubifs_leb_change(c, lnum++, buf, alen);
if (err)
goto out;
p = buf;
@@ -806,7 +803,7 @@
alen = ALIGN(len, c->min_io_size);
set_ltab(c, lnum, c->leb_size - alen, alen - len);
memset(p, 0xff, alen - len);
- err = ubifs_leb_change(c, lnum++, buf, alen, UBI_SHORTTERM);
+ err = ubifs_leb_change(c, lnum++, buf, alen);
if (err)
goto out;
p = buf;
@@ -826,7 +823,7 @@
/* Write remaining buffer */
memset(p, 0xff, alen - len);
- err = ubifs_leb_change(c, lnum, buf, alen, UBI_SHORTTERM);
+ err = ubifs_leb_change(c, lnum, buf, alen);
if (err)
goto out;
@@ -926,7 +923,7 @@
if (crc != calc_crc) {
ubifs_err("invalid crc in LPT node: crc %hx calc %hx", crc,
calc_crc);
- dbg_dump_stack();
+ dump_stack();
return -EINVAL;
}
return 0;
@@ -949,7 +946,7 @@
if (node_type != type) {
ubifs_err("invalid type (%d) in LPT node type %d", node_type,
type);
- dbg_dump_stack();
+ dump_stack();
return -EINVAL;
}
return 0;
@@ -1247,7 +1244,7 @@
out:
ubifs_err("error %d reading nnode at %d:%d", err, lnum, offs);
- dbg_dump_stack();
+ dump_stack();
kfree(nnode);
return err;
}
@@ -1312,8 +1309,8 @@
out:
ubifs_err("error %d reading pnode at %d:%d", err, lnum, offs);
- dbg_dump_pnode(c, pnode, parent, iip);
- dbg_dump_stack();
+ ubifs_dump_pnode(c, pnode, parent, iip);
+ dump_stack();
dbg_msg("calc num: %d", calc_pnode_num_from_parent(c, parent, iip));
kfree(pnode);
return err;
@@ -1740,16 +1737,20 @@
if (rd) {
err = lpt_init_rd(c);
if (err)
- return err;
+ goto out_err;
}
if (wr) {
err = lpt_init_wr(c);
if (err)
- return err;
+ goto out_err;
}
return 0;
+
+out_err:
+ ubifs_lpt_free(c, 0);
+ return err;
}
/**
@@ -2080,8 +2081,6 @@
return err;
}
-#ifdef CONFIG_UBIFS_FS_DEBUG
-
/**
* dbg_chk_pnode - check a pnode.
* @c: the UBIFS file-system description object
@@ -2096,8 +2095,8 @@
int i;
if (pnode->num != col) {
- dbg_err("pnode num %d expected %d parent num %d iip %d",
- pnode->num, col, pnode->parent->num, pnode->iip);
+ ubifs_err("pnode num %d expected %d parent num %d iip %d",
+ pnode->num, col, pnode->parent->num, pnode->iip);
return -EINVAL;
}
for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
@@ -2111,14 +2110,14 @@
if (lnum >= c->leb_cnt)
continue;
if (lprops->lnum != lnum) {
- dbg_err("bad LEB number %d expected %d",
- lprops->lnum, lnum);
+ ubifs_err("bad LEB number %d expected %d",
+ lprops->lnum, lnum);
return -EINVAL;
}
if (lprops->flags & LPROPS_TAKEN) {
if (cat != LPROPS_UNCAT) {
- dbg_err("LEB %d taken but not uncat %d",
- lprops->lnum, cat);
+ ubifs_err("LEB %d taken but not uncat %d",
+ lprops->lnum, cat);
return -EINVAL;
}
continue;
@@ -2130,8 +2129,8 @@
case LPROPS_FRDI_IDX:
break;
default:
- dbg_err("LEB %d index but cat %d",
- lprops->lnum, cat);
+ ubifs_err("LEB %d index but cat %d",
+ lprops->lnum, cat);
return -EINVAL;
}
} else {
@@ -2143,8 +2142,8 @@
case LPROPS_FREEABLE:
break;
default:
- dbg_err("LEB %d not index but cat %d",
- lprops->lnum, cat);
+ ubifs_err("LEB %d not index but cat %d",
+ lprops->lnum, cat);
return -EINVAL;
}
}
@@ -2184,24 +2183,24 @@
break;
}
if (!found) {
- dbg_err("LEB %d cat %d not found in cat heap/list",
- lprops->lnum, cat);
+ ubifs_err("LEB %d cat %d not found in cat heap/list",
+ lprops->lnum, cat);
return -EINVAL;
}
switch (cat) {
case LPROPS_EMPTY:
if (lprops->free != c->leb_size) {
- dbg_err("LEB %d cat %d free %d dirty %d",
- lprops->lnum, cat, lprops->free,
- lprops->dirty);
+ ubifs_err("LEB %d cat %d free %d dirty %d",
+ lprops->lnum, cat, lprops->free,
+ lprops->dirty);
return -EINVAL;
}
case LPROPS_FREEABLE:
case LPROPS_FRDI_IDX:
if (lprops->free + lprops->dirty != c->leb_size) {
- dbg_err("LEB %d cat %d free %d dirty %d",
- lprops->lnum, cat, lprops->free,
- lprops->dirty);
+ ubifs_err("LEB %d cat %d free %d dirty %d",
+ lprops->lnum, cat, lprops->free,
+ lprops->dirty);
return -EINVAL;
}
}
@@ -2235,9 +2234,10 @@
/* cnode is a nnode */
num = calc_nnode_num(row, col);
if (cnode->num != num) {
- dbg_err("nnode num %d expected %d "
- "parent num %d iip %d", cnode->num, num,
- (nnode ? nnode->num : 0), cnode->iip);
+ ubifs_err("nnode num %d expected %d "
+ "parent num %d iip %d",
+ cnode->num, num,
+ (nnode ? nnode->num : 0), cnode->iip);
return -EINVAL;
}
nn = (struct ubifs_nnode *)cnode;
@@ -2274,5 +2274,3 @@
}
return 0;
}
-
-#endif /* CONFIG_UBIFS_FS_DEBUG */
diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index cddd6bd..4fa7073 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -30,11 +30,7 @@
#include <linux/random.h>
#include "ubifs.h"
-#ifdef CONFIG_UBIFS_FS_DEBUG
static int dbg_populate_lsave(struct ubifs_info *c);
-#else
-#define dbg_populate_lsave(c) 0
-#endif
/**
* first_dirty_cnode - find first dirty cnode.
@@ -324,11 +320,10 @@
return 0;
no_space:
- ubifs_err("LPT out of space");
- dbg_err("LPT out of space at LEB %d:%d needing %d, done_ltab %d, "
- "done_lsave %d", lnum, offs, len, done_ltab, done_lsave);
- dbg_dump_lpt_info(c);
- dbg_dump_lpt_lebs(c);
+ ubifs_err("LPT out of space at LEB %d:%d needing %d, done_ltab %d, "
+ "done_lsave %d", lnum, offs, len, done_ltab, done_lsave);
+ ubifs_dump_lpt_info(c);
+ ubifs_dump_lpt_lebs(c);
dump_stack();
return err;
}
@@ -421,7 +416,7 @@
alen = ALIGN(wlen, c->min_io_size);
memset(buf + offs, 0xff, alen - wlen);
err = ubifs_leb_write(c, lnum, buf + from, from,
- alen, UBI_SHORTTERM);
+ alen);
if (err)
return err;
}
@@ -479,8 +474,7 @@
wlen = offs - from;
alen = ALIGN(wlen, c->min_io_size);
memset(buf + offs, 0xff, alen - wlen);
- err = ubifs_leb_write(c, lnum, buf + from, from, alen,
- UBI_SHORTTERM);
+ err = ubifs_leb_write(c, lnum, buf + from, from, alen);
if (err)
return err;
dbg_chk_lpt_sz(c, 2, c->leb_size - offs);
@@ -506,8 +500,7 @@
wlen = offs - from;
alen = ALIGN(wlen, c->min_io_size);
memset(buf + offs, 0xff, alen - wlen);
- err = ubifs_leb_write(c, lnum, buf + from, from, alen,
- UBI_SHORTTERM);
+ err = ubifs_leb_write(c, lnum, buf + from, from, alen);
if (err)
return err;
dbg_chk_lpt_sz(c, 2, c->leb_size - offs);
@@ -531,7 +524,7 @@
wlen = offs - from;
alen = ALIGN(wlen, c->min_io_size);
memset(buf + offs, 0xff, alen - wlen);
- err = ubifs_leb_write(c, lnum, buf + from, from, alen, UBI_SHORTTERM);
+ err = ubifs_leb_write(c, lnum, buf + from, from, alen);
if (err)
return err;
@@ -552,11 +545,10 @@
return 0;
no_space:
- ubifs_err("LPT out of space mismatch");
- dbg_err("LPT out of space mismatch at LEB %d:%d needing %d, done_ltab "
- "%d, done_lsave %d", lnum, offs, len, done_ltab, done_lsave);
- dbg_dump_lpt_info(c);
- dbg_dump_lpt_lebs(c);
+ ubifs_err("LPT out of space mismatch at LEB %d:%d needing %d, done_ltab "
+ "%d, done_lsave %d", lnum, offs, len, done_ltab, done_lsave);
+ ubifs_dump_lpt_info(c);
+ ubifs_dump_lpt_lebs(c);
dump_stack();
return err;
}
@@ -1497,7 +1489,9 @@
kfree(c->lpt_nod_buf);
}
-#ifdef CONFIG_UBIFS_FS_DEBUG
+/*
+ * Everything below is related to debugging.
+ */
/**
* dbg_is_all_ff - determine if a buffer contains only 0xFF bytes.
@@ -1735,7 +1729,7 @@
for (lnum = c->lpt_first; lnum <= c->lpt_last; lnum++) {
err = dbg_check_ltab_lnum(c, lnum);
if (err) {
- dbg_err("failed at LEB %d", lnum);
+ ubifs_err("failed at LEB %d", lnum);
return err;
}
}
@@ -1767,10 +1761,10 @@
free += c->leb_size;
}
if (free < c->lpt_sz) {
- dbg_err("LPT space error: free %lld lpt_sz %lld",
- free, c->lpt_sz);
- dbg_dump_lpt_info(c);
- dbg_dump_lpt_lebs(c);
+ ubifs_err("LPT space error: free %lld lpt_sz %lld",
+ free, c->lpt_sz);
+ ubifs_dump_lpt_info(c);
+ ubifs_dump_lpt_lebs(c);
dump_stack();
return -EINVAL;
}
@@ -1807,13 +1801,13 @@
d->chk_lpt_lebs = 0;
d->chk_lpt_wastage = 0;
if (c->dirty_pn_cnt > c->pnode_cnt) {
- dbg_err("dirty pnodes %d exceed max %d",
- c->dirty_pn_cnt, c->pnode_cnt);
+ ubifs_err("dirty pnodes %d exceed max %d",
+ c->dirty_pn_cnt, c->pnode_cnt);
err = -EINVAL;
}
if (c->dirty_nn_cnt > c->nnode_cnt) {
- dbg_err("dirty nnodes %d exceed max %d",
- c->dirty_nn_cnt, c->nnode_cnt);
+ ubifs_err("dirty nnodes %d exceed max %d",
+ c->dirty_nn_cnt, c->nnode_cnt);
err = -EINVAL;
}
return err;
@@ -1830,23 +1824,23 @@
chk_lpt_sz *= d->chk_lpt_lebs;
chk_lpt_sz += len - c->nhead_offs;
if (d->chk_lpt_sz != chk_lpt_sz) {
- dbg_err("LPT wrote %lld but space used was %lld",
- d->chk_lpt_sz, chk_lpt_sz);
+ ubifs_err("LPT wrote %lld but space used was %lld",
+ d->chk_lpt_sz, chk_lpt_sz);
err = -EINVAL;
}
if (d->chk_lpt_sz > c->lpt_sz) {
- dbg_err("LPT wrote %lld but lpt_sz is %lld",
- d->chk_lpt_sz, c->lpt_sz);
+ ubifs_err("LPT wrote %lld but lpt_sz is %lld",
+ d->chk_lpt_sz, c->lpt_sz);
err = -EINVAL;
}
if (d->chk_lpt_sz2 && d->chk_lpt_sz != d->chk_lpt_sz2) {
- dbg_err("LPT layout size %lld but wrote %lld",
- d->chk_lpt_sz, d->chk_lpt_sz2);
+ ubifs_err("LPT layout size %lld but wrote %lld",
+ d->chk_lpt_sz, d->chk_lpt_sz2);
err = -EINVAL;
}
if (d->chk_lpt_sz2 && d->new_nhead_offs != len) {
- dbg_err("LPT new nhead offs: expected %d was %d",
- d->new_nhead_offs, len);
+ ubifs_err("LPT new nhead offs: expected %d was %d",
+ d->new_nhead_offs, len);
err = -EINVAL;
}
lpt_sz = (long long)c->pnode_cnt * c->pnode_sz;
@@ -1855,13 +1849,13 @@
if (c->big_lpt)
lpt_sz += c->lsave_sz;
if (d->chk_lpt_sz - d->chk_lpt_wastage > lpt_sz) {
- dbg_err("LPT chk_lpt_sz %lld + waste %lld exceeds %lld",
- d->chk_lpt_sz, d->chk_lpt_wastage, lpt_sz);
+ ubifs_err("LPT chk_lpt_sz %lld + waste %lld exceeds %lld",
+ d->chk_lpt_sz, d->chk_lpt_wastage, lpt_sz);
err = -EINVAL;
}
if (err) {
- dbg_dump_lpt_info(c);
- dbg_dump_lpt_lebs(c);
+ ubifs_dump_lpt_info(c);
+ ubifs_dump_lpt_lebs(c);
dump_stack();
}
d->chk_lpt_sz2 = d->chk_lpt_sz;
@@ -1880,7 +1874,7 @@
}
/**
- * dbg_dump_lpt_leb - dump an LPT LEB.
+ * ubifs_dump_lpt_leb - dump an LPT LEB.
* @c: UBIFS file-system description object
* @lnum: LEB number to dump
*
@@ -1986,13 +1980,13 @@
}
/**
- * dbg_dump_lpt_lebs - dump LPT lebs.
+ * ubifs_dump_lpt_lebs - dump LPT lebs.
* @c: UBIFS file-system description object
*
* This function dumps all LPT LEBs. The caller has to make sure the LPT is
* locked.
*/
-void dbg_dump_lpt_lebs(const struct ubifs_info *c)
+void ubifs_dump_lpt_lebs(const struct ubifs_info *c)
{
int i;
@@ -2046,5 +2040,3 @@
return 1;
}
-
-#endif /* CONFIG_UBIFS_FS_DEBUG */
diff --git a/fs/ubifs/master.c b/fs/ubifs/master.c
index 278c238..ab83ace 100644
--- a/fs/ubifs/master.c
+++ b/fs/ubifs/master.c
@@ -241,7 +241,7 @@
out:
ubifs_err("bad master node at offset %d error %d", c->mst_offs, err);
- dbg_dump_node(c, c->mst_node);
+ ubifs_dump_node(c, c->mst_node);
return -EINVAL;
}
@@ -317,7 +317,7 @@
if (c->leb_cnt < old_leb_cnt ||
c->leb_cnt < UBIFS_MIN_LEB_CNT) {
ubifs_err("bad leb_cnt on master node");
- dbg_dump_node(c, c->mst_node);
+ ubifs_dump_node(c, c->mst_node);
return -EINVAL;
}
@@ -379,7 +379,7 @@
c->mst_offs = offs;
c->mst_node->highest_inum = cpu_to_le64(c->highest_inum);
- err = ubifs_write_node(c, c->mst_node, len, lnum, offs, UBI_SHORTTERM);
+ err = ubifs_write_node(c, c->mst_node, len, lnum, offs);
if (err)
return err;
@@ -390,7 +390,7 @@
if (err)
return err;
}
- err = ubifs_write_node(c, c->mst_node, len, lnum, offs, UBI_SHORTTERM);
+ err = ubifs_write_node(c, c->mst_node, len, lnum, offs);
return err;
}
diff --git a/fs/ubifs/orphan.c b/fs/ubifs/orphan.c
index c542c73..b02734d 100644
--- a/fs/ubifs/orphan.c
+++ b/fs/ubifs/orphan.c
@@ -52,11 +52,7 @@
* than the maximum number of orphans allowed.
*/
-#ifdef CONFIG_UBIFS_FS_DEBUG
static int dbg_check_orphans(struct ubifs_info *c);
-#else
-#define dbg_check_orphans(c) 0
-#endif
/**
* ubifs_add_orphan - add an orphan.
@@ -92,7 +88,7 @@
else if (inum > o->inum)
p = &(*p)->rb_right;
else {
- dbg_err("orphaned twice");
+ ubifs_err("orphaned twice");
spin_unlock(&c->orphan_lock);
kfree(orphan);
return 0;
@@ -158,8 +154,8 @@
}
}
spin_unlock(&c->orphan_lock);
- dbg_err("missing orphan ino %lu", (unsigned long)inum);
- dbg_dump_stack();
+ ubifs_err("missing orphan ino %lu", (unsigned long)inum);
+ dump_stack();
}
/**
@@ -248,8 +244,7 @@
ubifs_assert(c->ohead_offs == 0);
ubifs_prepare_node(c, c->orph_buf, len, 1);
len = ALIGN(len, c->min_io_size);
- err = ubifs_leb_change(c, c->ohead_lnum, c->orph_buf, len,
- UBI_SHORTTERM);
+ err = ubifs_leb_change(c, c->ohead_lnum, c->orph_buf, len);
} else {
if (c->ohead_offs == 0) {
/* Ensure LEB has been unmapped */
@@ -258,7 +253,7 @@
return err;
}
err = ubifs_write_node(c, c->orph_buf, len, c->ohead_lnum,
- c->ohead_offs, UBI_SHORTTERM);
+ c->ohead_offs);
}
return err;
}
@@ -569,7 +564,7 @@
if (snod->type != UBIFS_ORPH_NODE) {
ubifs_err("invalid node type %d in orphan area at "
"%d:%d", snod->type, sleb->lnum, snod->offs);
- dbg_dump_node(c, snod->node);
+ ubifs_dump_node(c, snod->node);
return -EINVAL;
}
@@ -597,7 +592,7 @@
ubifs_err("out of order commit number %llu in "
"orphan node at %d:%d",
cmt_no, sleb->lnum, snod->offs);
- dbg_dump_node(c, snod->node);
+ ubifs_dump_node(c, snod->node);
return -EINVAL;
}
dbg_rcvry("out of date LEB %d", sleb->lnum);
@@ -725,7 +720,9 @@
return err;
}
-#ifdef CONFIG_UBIFS_FS_DEBUG
+/*
+ * Everything below is related to debugging.
+ */
struct check_orphan {
struct rb_node rb;
@@ -968,5 +965,3 @@
kfree(ci.node);
return err;
}
-
-#endif /* CONFIG_UBIFS_FS_DEBUG */
diff --git a/fs/ubifs/recovery.c b/fs/ubifs/recovery.c
index 2a935b3..c30d976b 100644
--- a/fs/ubifs/recovery.c
+++ b/fs/ubifs/recovery.c
@@ -213,10 +213,10 @@
mst->flags |= cpu_to_le32(UBIFS_MST_RCVRY);
ubifs_prepare_node(c, mst, UBIFS_MST_NODE_SZ, 1);
- err = ubifs_leb_change(c, lnum, mst, sz, UBI_SHORTTERM);
+ err = ubifs_leb_change(c, lnum, mst, sz);
if (err)
goto out;
- err = ubifs_leb_change(c, lnum + 1, mst, sz, UBI_SHORTTERM);
+ err = ubifs_leb_change(c, lnum + 1, mst, sz);
if (err)
goto out;
out:
@@ -362,12 +362,12 @@
out_free:
ubifs_err("failed to recover master node");
if (mst1) {
- dbg_err("dumping first master node");
- dbg_dump_node(c, mst1);
+ ubifs_err("dumping first master node");
+ ubifs_dump_node(c, mst1);
}
if (mst2) {
- dbg_err("dumping second master node");
- dbg_dump_node(c, mst2);
+ ubifs_err("dumping second master node");
+ ubifs_dump_node(c, mst2);
}
vfree(buf2);
vfree(buf1);
@@ -555,8 +555,7 @@
ubifs_pad(c, buf, pad_len);
}
}
- err = ubifs_leb_change(c, lnum, sleb->buf, len,
- UBI_UNKNOWN);
+ err = ubifs_leb_change(c, lnum, sleb->buf, len);
if (err)
return err;
}
@@ -683,7 +682,7 @@
ret, lnum, offs);
break;
} else {
- dbg_err("unexpected return value %d", ret);
+ ubifs_err("unexpected return value %d", ret);
err = -EINVAL;
goto error;
}
@@ -789,7 +788,7 @@
corrupted_rescan:
/* Re-scan the corrupted data with verbose messages */
- dbg_err("corruptio %d", ret);
+ ubifs_err("corruptio %d", ret);
ubifs_scan_a_node(c, buf, len, lnum, offs, 1);
corrupted:
ubifs_scanned_corruption(c, lnum, offs, buf);
@@ -827,17 +826,17 @@
goto out_free;
ret = ubifs_scan_a_node(c, cs_node, UBIFS_CS_NODE_SZ, lnum, offs, 0);
if (ret != SCANNED_A_NODE) {
- dbg_err("Not a valid node");
+ ubifs_err("Not a valid node");
goto out_err;
}
if (cs_node->ch.node_type != UBIFS_CS_NODE) {
- dbg_err("Node a CS node, type is %d", cs_node->ch.node_type);
+ ubifs_err("Node a CS node, type is %d", cs_node->ch.node_type);
goto out_err;
}
if (le64_to_cpu(cs_node->cmt_no) != c->cmt_no) {
- dbg_err("CS node cmt_no %llu != current cmt_no %llu",
- (unsigned long long)le64_to_cpu(cs_node->cmt_no),
- c->cmt_no);
+ ubifs_err("CS node cmt_no %llu != current cmt_no %llu",
+ (unsigned long long)le64_to_cpu(cs_node->cmt_no),
+ c->cmt_no);
goto out_err;
}
*cs_sqnum = le64_to_cpu(cs_node->ch.sqnum);
@@ -941,7 +940,7 @@
err = ubifs_leb_read(c, lnum, sbuf, 0, offs, 1);
if (err)
return err;
- return ubifs_leb_change(c, lnum, sbuf, offs, UBI_UNKNOWN);
+ return ubifs_leb_change(c, lnum, sbuf, offs);
}
return 0;
@@ -1071,7 +1070,7 @@
}
/* Write back the LEB atomically */
- err = ubifs_leb_change(c, lnum, sbuf, len, UBI_UNKNOWN);
+ err = ubifs_leb_change(c, lnum, sbuf, len);
if (err)
return err;
@@ -1138,9 +1137,9 @@
*/
lnum = ubifs_find_free_leb_for_idx(c);
if (lnum < 0) {
- dbg_err("could not find an empty LEB");
- dbg_dump_lprops(c);
- dbg_dump_budg(c, &c->bi);
+ ubifs_err("could not find an empty LEB");
+ ubifs_dump_lprops(c);
+ ubifs_dump_budg(c, &c->bi);
return lnum;
}
@@ -1218,7 +1217,7 @@
}
mutex_unlock(&wbuf->io_mutex);
if (err < 0) {
- dbg_err("GC failed, error %d", err);
+ ubifs_err("GC failed, error %d", err);
if (err == -EAGAIN)
err = -EINVAL;
return err;
@@ -1472,7 +1471,7 @@
len -= 1;
len = ALIGN(len + 1, c->min_io_size);
/* Atomically write the fixed LEB back again */
- err = ubifs_leb_change(c, lnum, c->sbuf, len, UBI_UNKNOWN);
+ err = ubifs_leb_change(c, lnum, c->sbuf, len);
if (err)
goto out;
dbg_rcvry("inode %lu at %d:%d size %lld -> %lld",
diff --git a/fs/ubifs/replay.c b/fs/ubifs/replay.c
index b007637..3a2da7e 100644
--- a/fs/ubifs/replay.c
+++ b/fs/ubifs/replay.c
@@ -154,8 +154,7 @@
/* Make sure the journal head points to the latest bud */
err = ubifs_wbuf_seek_nolock(&c->jheads[b->bud->jhead].wbuf,
- b->bud->lnum, c->leb_size - b->free,
- UBI_SHORTTERM);
+ b->bud->lnum, c->leb_size - b->free);
out:
ubifs_release_lprops(c);
@@ -686,7 +685,7 @@
out_dump:
ubifs_err("bad node is at LEB %d:%d", lnum, snod->offs);
- dbg_dump_node(c, snod->node);
+ ubifs_dump_node(c, snod->node);
ubifs_scan_destroy(sleb);
return -EINVAL;
}
@@ -861,16 +860,16 @@
* numbers.
*/
if (snod->type != UBIFS_CS_NODE) {
- dbg_err("first log node at LEB %d:%d is not CS node",
- lnum, offs);
+ ubifs_err("first log node at LEB %d:%d is not CS node",
+ lnum, offs);
goto out_dump;
}
if (le64_to_cpu(node->cmt_no) != c->cmt_no) {
- dbg_err("first CS node at LEB %d:%d has wrong "
- "commit number %llu expected %llu",
- lnum, offs,
- (unsigned long long)le64_to_cpu(node->cmt_no),
- c->cmt_no);
+ ubifs_err("first CS node at LEB %d:%d has wrong "
+ "commit number %llu expected %llu",
+ lnum, offs,
+ (unsigned long long)le64_to_cpu(node->cmt_no),
+ c->cmt_no);
goto out_dump;
}
@@ -892,7 +891,7 @@
/* Make sure the first node sits at offset zero of the LEB */
if (snod->offs != 0) {
- dbg_err("first node is not at zero offset");
+ ubifs_err("first node is not at zero offset");
goto out_dump;
}
@@ -905,8 +904,8 @@
}
if (snod->sqnum < c->cs_sqnum) {
- dbg_err("bad sqnum %llu, commit sqnum %llu",
- snod->sqnum, c->cs_sqnum);
+ ubifs_err("bad sqnum %llu, commit sqnum %llu",
+ snod->sqnum, c->cs_sqnum);
goto out_dump;
}
@@ -958,7 +957,7 @@
out_dump:
ubifs_err("log error detected while replaying the log at LEB %d:%d",
lnum, offs + snod->offs);
- dbg_dump_node(c, snod->node);
+ ubifs_dump_node(c, snod->node);
ubifs_scan_destroy(sleb);
return -EINVAL;
}
diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c
index 771f7fb..ef3d1ba 100644
--- a/fs/ubifs/sb.c
+++ b/fs/ubifs/sb.c
@@ -130,7 +130,6 @@
* orphan node.
*/
orph_lebs = UBIFS_MIN_ORPH_LEBS;
-#ifdef CONFIG_UBIFS_FS_DEBUG
if (c->leb_cnt - min_leb_cnt > 1)
/*
* For debugging purposes it is better to have at least 2
@@ -138,7 +137,6 @@
* consolidations and would be stressed more.
*/
orph_lebs += 1;
-#endif
main_lebs = c->leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS - log_lebs;
main_lebs -= orph_lebs;
@@ -196,7 +194,7 @@
sup->rp_size = cpu_to_le64(tmp64);
sup->ro_compat_version = cpu_to_le32(UBIFS_RO_COMPAT_VERSION);
- err = ubifs_write_node(c, sup, UBIFS_SB_NODE_SZ, 0, 0, UBI_LONGTERM);
+ err = ubifs_write_node(c, sup, UBIFS_SB_NODE_SZ, 0, 0);
kfree(sup);
if (err)
return err;
@@ -252,14 +250,13 @@
mst->total_used = cpu_to_le64(UBIFS_INO_NODE_SZ);
- err = ubifs_write_node(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM, 0,
- UBI_UNKNOWN);
+ err = ubifs_write_node(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM, 0);
if (err) {
kfree(mst);
return err;
}
- err = ubifs_write_node(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM + 1, 0,
- UBI_UNKNOWN);
+ err = ubifs_write_node(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM + 1,
+ 0);
kfree(mst);
if (err)
return err;
@@ -282,8 +279,7 @@
key_write_idx(c, &key, &br->key);
br->lnum = cpu_to_le32(main_first + DEFAULT_DATA_LEB);
br->len = cpu_to_le32(UBIFS_INO_NODE_SZ);
- err = ubifs_write_node(c, idx, tmp, main_first + DEFAULT_IDX_LEB, 0,
- UBI_UNKNOWN);
+ err = ubifs_write_node(c, idx, tmp, main_first + DEFAULT_IDX_LEB, 0);
kfree(idx);
if (err)
return err;
@@ -315,8 +311,7 @@
ino->flags = cpu_to_le32(UBIFS_COMPR_FL);
err = ubifs_write_node(c, ino, UBIFS_INO_NODE_SZ,
- main_first + DEFAULT_DATA_LEB, 0,
- UBI_UNKNOWN);
+ main_first + DEFAULT_DATA_LEB, 0);
kfree(ino);
if (err)
return err;
@@ -335,8 +330,7 @@
return -ENOMEM;
cs->ch.node_type = UBIFS_CS_NODE;
- err = ubifs_write_node(c, cs, UBIFS_CS_NODE_SZ, UBIFS_LOG_LNUM,
- 0, UBI_UNKNOWN);
+ err = ubifs_write_node(c, cs, UBIFS_CS_NODE_SZ, UBIFS_LOG_LNUM, 0);
kfree(cs);
ubifs_msg("default file-system created");
@@ -475,7 +469,7 @@
failed:
ubifs_err("bad superblock, error %d", err);
- dbg_dump_node(c, sup);
+ ubifs_dump_node(c, sup);
return -EINVAL;
}
@@ -518,7 +512,7 @@
int len = ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size);
ubifs_prepare_node(c, sup, UBIFS_SB_NODE_SZ, 1);
- return ubifs_leb_change(c, UBIFS_SB_LNUM, sup, len, UBI_LONGTERM);
+ return ubifs_leb_change(c, UBIFS_SB_LNUM, sup, len);
}
/**
@@ -691,7 +685,7 @@
if (err)
return err;
- return ubifs_leb_change(c, lnum, c->sbuf, len, UBI_UNKNOWN);
+ return ubifs_leb_change(c, lnum, c->sbuf, len);
}
/**
diff --git a/fs/ubifs/scan.c b/fs/ubifs/scan.c
index 37383e8..7c40e602 100644
--- a/fs/ubifs/scan.c
+++ b/fs/ubifs/scan.c
@@ -101,7 +101,7 @@
if (!quiet) {
ubifs_err("bad pad node at LEB %d:%d",
lnum, offs);
- dbg_dump_node(c, pad);
+ ubifs_dump_node(c, pad);
}
return SCANNED_A_BAD_PAD_NODE;
}
@@ -109,8 +109,8 @@
/* Make the node pads to 8-byte boundary */
if ((node_len + pad_len) & 7) {
if (!quiet)
- dbg_err("bad padding length %d - %d",
- offs, offs + node_len + pad_len);
+ ubifs_err("bad padding length %d - %d",
+ offs, offs + node_len + pad_len);
return SCANNED_A_BAD_PAD_NODE;
}
@@ -245,7 +245,7 @@
len = c->leb_size - offs;
if (len > 8192)
len = 8192;
- dbg_err("first %d bytes from LEB %d:%d", len, lnum, offs);
+ ubifs_err("first %d bytes from LEB %d:%d", len, lnum, offs);
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 4, buf, len, 1);
}
@@ -300,16 +300,16 @@
switch (ret) {
case SCANNED_GARBAGE:
- dbg_err("garbage");
+ ubifs_err("garbage");
goto corrupted;
case SCANNED_A_NODE:
break;
case SCANNED_A_CORRUPT_NODE:
case SCANNED_A_BAD_PAD_NODE:
- dbg_err("bad node");
+ ubifs_err("bad node");
goto corrupted;
default:
- dbg_err("unknown");
+ ubifs_err("unknown");
err = -EINVAL;
goto error;
}
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 76e4e05..001accc 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -246,8 +246,8 @@
out_invalid:
ubifs_err("inode %lu validation failed, error %d", inode->i_ino, err);
- dbg_dump_node(c, ino);
- dbg_dump_inode(c, inode);
+ ubifs_dump_node(c, ino);
+ ubifs_dump_inode(c, inode);
err = -EINVAL;
out_ino:
kfree(ino);
@@ -668,8 +668,8 @@
tmp = UBIFS_CS_NODE_SZ + UBIFS_REF_NODE_SZ * c->jhead_cnt;
tmp = ALIGN(tmp, c->min_io_size);
if (tmp > c->leb_size) {
- dbg_err("too small LEB size %d, at least %d needed",
- c->leb_size, tmp);
+ ubifs_err("too small LEB size %d, at least %d needed",
+ c->leb_size, tmp);
return -EINVAL;
}
@@ -683,8 +683,8 @@
tmp /= c->leb_size;
tmp += 1;
if (c->log_lebs < tmp) {
- dbg_err("too small log %d LEBs, required min. %d LEBs",
- c->log_lebs, tmp);
+ ubifs_err("too small log %d LEBs, required min. %d LEBs",
+ c->log_lebs, tmp);
return -EINVAL;
}
@@ -813,13 +813,10 @@
c->jheads[i].grouped = 1;
}
- c->jheads[BASEHD].wbuf.dtype = UBI_SHORTTERM;
/*
- * Garbage Collector head likely contains long-term data and
- * does not need to be synchronized by timer. Also GC head nodes are
- * not grouped.
+ * Garbage Collector head does not need to be synchronized by timer.
+ * Also GC head nodes are not grouped.
*/
- c->jheads[GCHD].wbuf.dtype = UBI_LONGTERM;
c->jheads[GCHD].wbuf.no_timer = 1;
c->jheads[GCHD].grouped = 0;
@@ -863,7 +860,7 @@
orph = list_entry(c->orph_list.next, struct ubifs_orphan, list);
list_del(&orph->list);
kfree(orph);
- dbg_err("orphan list not empty at unmount");
+ ubifs_err("orphan list not empty at unmount");
}
vfree(c->orph_buf);
@@ -1147,8 +1144,8 @@
ubifs_assert(c->dark_wm > 0);
if (c->lst.total_free + c->lst.total_dirty < c->dark_wm) {
ubifs_err("insufficient free space to mount in R/W mode");
- dbg_dump_budg(c, &c->bi);
- dbg_dump_lprops(c);
+ ubifs_dump_budg(c, &c->bi);
+ ubifs_dump_lprops(c);
return -ENOSPC;
}
return 0;
@@ -1301,7 +1298,7 @@
if (!c->ro_mount && c->space_fixup) {
err = ubifs_fixup_free_space(c);
if (err)
- goto out_master;
+ goto out_lpt;
}
if (!c->ro_mount) {
@@ -2126,8 +2123,8 @@
*/
ubi = open_ubi(name, UBI_READONLY);
if (IS_ERR(ubi)) {
- dbg_err("cannot open \"%s\", error %d",
- name, (int)PTR_ERR(ubi));
+ ubifs_err("cannot open \"%s\", error %d",
+ name, (int)PTR_ERR(ubi));
return ERR_CAST(ubi);
}
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index abd5133..349f31a 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -339,8 +339,8 @@
err = ubifs_validate_entry(c, dent);
if (err) {
- dbg_dump_stack();
- dbg_dump_node(c, dent);
+ dump_stack();
+ ubifs_dump_node(c, dent);
return err;
}
@@ -372,8 +372,8 @@
err = ubifs_validate_entry(c, node);
if (err) {
- dbg_dump_stack();
- dbg_dump_node(c, node);
+ dump_stack();
+ ubifs_dump_node(c, node);
return err;
}
@@ -1733,8 +1733,8 @@
err = -EINVAL;
out:
ubifs_err("bad node at LEB %d:%d", zbr->lnum, zbr->offs);
- dbg_dump_node(c, buf);
- dbg_dump_stack();
+ ubifs_dump_node(c, buf);
+ dump_stack();
return err;
}
@@ -1775,7 +1775,7 @@
if (err && err != -EBADMSG) {
ubifs_err("failed to read from LEB %d:%d, error %d",
lnum, offs, err);
- dbg_dump_stack();
+ dump_stack();
dbg_tnck(&bu->key, "key ");
return err;
}
@@ -2403,7 +2403,7 @@
err = ubifs_add_dirt(c, zbr->lnum, zbr->len);
if (err) {
- dbg_dump_znode(c, znode);
+ ubifs_dump_znode(c, znode);
return err;
}
@@ -2649,7 +2649,7 @@
err = ubifs_add_dirt(c, znode->zbranch[i].lnum,
znode->zbranch[i].len);
if (err) {
- dbg_dump_znode(c, znode);
+ ubifs_dump_znode(c, znode);
goto out_unlock;
}
dbg_tnck(key, "removing key ");
@@ -3275,8 +3275,6 @@
return err;
}
-#ifdef CONFIG_UBIFS_FS_DEBUG
-
/**
* dbg_check_inode_size - check if inode size is correct.
* @c: UBIFS file-system description object
@@ -3335,13 +3333,11 @@
(unsigned long)inode->i_ino, size,
((loff_t)block) << UBIFS_BLOCK_SHIFT);
mutex_unlock(&c->tnc_mutex);
- dbg_dump_inode(c, inode);
- dbg_dump_stack();
+ ubifs_dump_inode(c, inode);
+ dump_stack();
return -EINVAL;
out_unlock:
mutex_unlock(&c->tnc_mutex);
return err;
}
-
-#endif /* CONFIG_UBIFS_FS_DEBUG */
diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c
index 4c15f07..523bbad 100644
--- a/fs/ubifs/tnc_commit.c
+++ b/fs/ubifs/tnc_commit.c
@@ -54,18 +54,16 @@
br->len = cpu_to_le32(zbr->len);
if (!zbr->lnum || !zbr->len) {
ubifs_err("bad ref in znode");
- dbg_dump_znode(c, znode);
+ ubifs_dump_znode(c, znode);
if (zbr->znode)
- dbg_dump_znode(c, zbr->znode);
+ ubifs_dump_znode(c, zbr->znode);
}
}
ubifs_prepare_node(c, idx, len, 0);
-#ifdef CONFIG_UBIFS_FS_DEBUG
znode->lnum = lnum;
znode->offs = offs;
znode->len = len;
-#endif
err = insert_old_idx_znode(c, znode);
@@ -322,8 +320,7 @@
0, 0, 0);
if (err)
return err;
- err = ubifs_leb_change(c, lnum, c->ileb_buf, c->ileb_len,
- UBI_SHORTTERM);
+ err = ubifs_leb_change(c, lnum, c->ileb_buf, c->ileb_len);
if (err)
return err;
dbg_gc("LEB %d wrote %d index nodes", lnum, tot_written);
@@ -388,8 +385,8 @@
* option which forces in-the-gaps is enabled.
*/
ubifs_warn("out of space");
- dbg_dump_budg(c, &c->bi);
- dbg_dump_lprops(c);
+ ubifs_dump_budg(c, &c->bi);
+ ubifs_dump_lprops(c);
}
/* Try to commit anyway */
err = 0;
@@ -456,11 +453,9 @@
offs = buf_offs + used;
-#ifdef CONFIG_UBIFS_FS_DEBUG
znode->lnum = lnum;
znode->offs = offs;
znode->len = len;
-#endif
/* Update the parent */
zp = znode->parent;
@@ -536,10 +531,8 @@
break;
}
-#ifdef CONFIG_UBIFS_FS_DEBUG
c->dbg->new_ihead_lnum = lnum;
c->dbg->new_ihead_offs = buf_offs;
-#endif
return 0;
}
@@ -864,9 +857,9 @@
br->len = cpu_to_le32(zbr->len);
if (!zbr->lnum || !zbr->len) {
ubifs_err("bad ref in znode");
- dbg_dump_znode(c, znode);
+ ubifs_dump_znode(c, znode);
if (zbr->znode)
- dbg_dump_znode(c, zbr->znode);
+ ubifs_dump_znode(c, zbr->znode);
}
}
len = ubifs_idx_node_sz(c, znode->child_cnt);
@@ -881,13 +874,11 @@
}
offs = buf_offs + used;
-#ifdef CONFIG_UBIFS_FS_DEBUG
if (lnum != znode->lnum || offs != znode->offs ||
len != znode->len) {
ubifs_err("inconsistent znode posn");
return -EINVAL;
}
-#endif
/* Grab some stuff from znode while we still can */
cnext = znode->cnext;
@@ -959,8 +950,7 @@
}
/* The buffer is full or there are no more znodes to do */
- err = ubifs_leb_write(c, lnum, c->cbuf, buf_offs, blen,
- UBI_SHORTTERM);
+ err = ubifs_leb_write(c, lnum, c->cbuf, buf_offs, blen);
if (err)
return err;
buf_offs += blen;
@@ -982,13 +972,11 @@
break;
}
-#ifdef CONFIG_UBIFS_FS_DEBUG
if (lnum != c->dbg->new_ihead_lnum ||
buf_offs != c->dbg->new_ihead_offs) {
ubifs_err("inconsistent ihead");
return -EINVAL;
}
-#endif
c->ihead_lnum = lnum;
c->ihead_offs = buf_offs;
diff --git a/fs/ubifs/tnc_misc.c b/fs/ubifs/tnc_misc.c
index dc28fe6..d38ac7f 100644
--- a/fs/ubifs/tnc_misc.c
+++ b/fs/ubifs/tnc_misc.c
@@ -293,10 +293,10 @@
lnum, offs, znode->level, znode->child_cnt);
if (znode->child_cnt > c->fanout || znode->level > UBIFS_MAX_LEVELS) {
- dbg_err("current fanout %d, branch count %d",
- c->fanout, znode->child_cnt);
- dbg_err("max levels %d, znode level %d",
- UBIFS_MAX_LEVELS, znode->level);
+ ubifs_err("current fanout %d, branch count %d",
+ c->fanout, znode->child_cnt);
+ ubifs_err("max levels %d, znode level %d",
+ UBIFS_MAX_LEVELS, znode->level);
err = 1;
goto out_dump;
}
@@ -316,7 +316,7 @@
if (zbr->lnum < c->main_first ||
zbr->lnum >= c->leb_cnt || zbr->offs < 0 ||
zbr->offs + zbr->len > c->leb_size || zbr->offs & 7) {
- dbg_err("bad branch %d", i);
+ ubifs_err("bad branch %d", i);
err = 2;
goto out_dump;
}
@@ -340,19 +340,19 @@
type = key_type(c, &zbr->key);
if (c->ranges[type].max_len == 0) {
if (zbr->len != c->ranges[type].len) {
- dbg_err("bad target node (type %d) length (%d)",
- type, zbr->len);
- dbg_err("have to be %d", c->ranges[type].len);
+ ubifs_err("bad target node (type %d) length (%d)",
+ type, zbr->len);
+ ubifs_err("have to be %d", c->ranges[type].len);
err = 4;
goto out_dump;
}
} else if (zbr->len < c->ranges[type].min_len ||
zbr->len > c->ranges[type].max_len) {
- dbg_err("bad target node (type %d) length (%d)",
- type, zbr->len);
- dbg_err("have to be in range of %d-%d",
- c->ranges[type].min_len,
- c->ranges[type].max_len);
+ ubifs_err("bad target node (type %d) length (%d)",
+ type, zbr->len);
+ ubifs_err("have to be in range of %d-%d",
+ c->ranges[type].min_len,
+ c->ranges[type].max_len);
err = 5;
goto out_dump;
}
@@ -370,13 +370,13 @@
cmp = keys_cmp(c, key1, key2);
if (cmp > 0) {
- dbg_err("bad key order (keys %d and %d)", i, i + 1);
+ ubifs_err("bad key order (keys %d and %d)", i, i + 1);
err = 6;
goto out_dump;
} else if (cmp == 0 && !is_hash_key(c, key1)) {
/* These can only be keys with colliding hash */
- dbg_err("keys %d and %d are not hashed but equivalent",
- i, i + 1);
+ ubifs_err("keys %d and %d are not hashed but equivalent",
+ i, i + 1);
err = 7;
goto out_dump;
}
@@ -387,7 +387,7 @@
out_dump:
ubifs_err("bad indexing node at LEB %d:%d, error %d", lnum, offs, err);
- dbg_dump_node(c, idx);
+ ubifs_dump_node(c, idx);
kfree(idx);
return -EINVAL;
}
@@ -486,7 +486,7 @@
zbr->lnum, zbr->offs);
dbg_tnck(key, "looked for key ");
dbg_tnck(&key1, "but found node's key ");
- dbg_dump_node(c, node);
+ ubifs_dump_node(c, node);
return -EINVAL;
}
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 93d59ac..1e5a086 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -650,8 +650,6 @@
* @avail: number of bytes available in the write-buffer
* @used: number of used bytes in the write-buffer
* @size: write-buffer size (in [@c->min_io_size, @c->max_write_size] range)
- * @dtype: type of data stored in this LEB (%UBI_LONGTERM, %UBI_SHORTTERM,
- * %UBI_UNKNOWN)
* @jhead: journal head the mutex belongs to (note, needed only to shut lockdep
* up by 'mutex_lock_nested()).
* @sync_callback: write-buffer synchronization callback
@@ -685,7 +683,6 @@
int avail;
int used;
int size;
- int dtype;
int jhead;
int (*sync_callback)(struct ubifs_info *c, int lnum, int free, int pad);
struct mutex io_mutex;
@@ -762,6 +759,9 @@
* @offs: offset of the corresponding indexing node
* @len: length of the corresponding indexing node
* @zbranch: array of znode branches (@c->fanout elements)
+ *
+ * Note! The @lnum, @offs, and @len fields are not really needed - we have them
+ * only for internal consistency check. They could be removed to save some RAM.
*/
struct ubifs_znode {
struct ubifs_znode *parent;
@@ -772,9 +772,9 @@
int child_cnt;
int iip;
int alt;
-#ifdef CONFIG_UBIFS_FS_DEBUG
- int lnum, offs, len;
-#endif
+ int lnum;
+ int offs;
+ int len;
struct ubifs_zbranch zbranch[];
};
@@ -1444,9 +1444,7 @@
struct rb_root size_tree;
struct ubifs_mount_opts mount_opts;
-#ifdef CONFIG_UBIFS_FS_DEBUG
struct ubifs_debug_info *dbg;
-#endif
};
extern struct list_head ubifs_infos;
@@ -1468,22 +1466,20 @@
int ubifs_leb_read(const struct ubifs_info *c, int lnum, void *buf, int offs,
int len, int even_ebadmsg);
int ubifs_leb_write(struct ubifs_info *c, int lnum, const void *buf, int offs,
- int len, int dtype);
-int ubifs_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len,
- int dtype);
+ int len);
+int ubifs_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len);
int ubifs_leb_unmap(struct ubifs_info *c, int lnum);
-int ubifs_leb_map(struct ubifs_info *c, int lnum, int dtype);
+int ubifs_leb_map(struct ubifs_info *c, int lnum);
int ubifs_is_mapped(const struct ubifs_info *c, int lnum);
int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len);
-int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs,
- int dtype);
+int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs);
int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf);
int ubifs_read_node(const struct ubifs_info *c, void *buf, int type, int len,
int lnum, int offs);
int ubifs_read_node_wbuf(struct ubifs_wbuf *wbuf, void *buf, int type, int len,
int lnum, int offs);
int ubifs_write_node(struct ubifs_info *c, void *node, int len, int lnum,
- int offs, int dtype);
+ int offs);
int ubifs_check_node(const struct ubifs_info *c, const void *buf, int lnum,
int offs, int quiet, int must_chk_crc);
void ubifs_prepare_node(struct ubifs_info *c, void *buf, int len, int pad);
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index 7a8bafa..0f7139b 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -399,8 +399,8 @@
if (buf) {
/* If @buf is %NULL we are supposed to return the length */
if (ui->data_len > size) {
- dbg_err("buffer size %zd, xattr len %d",
- size, ui->data_len);
+ ubifs_err("buffer size %zd, xattr len %d",
+ size, ui->data_len);
err = -ERANGE;
goto out_iput;
}
diff --git a/include/linux/mtd/ubi.h b/include/linux/mtd/ubi.h
index db4836b..c3918a0 100644
--- a/include/linux/mtd/ubi.h
+++ b/include/linux/mtd/ubi.h
@@ -25,6 +25,9 @@
#include <linux/types.h>
#include <mtd/ubi-user.h>
+/* All voumes/LEBs */
+#define UBI_ALL -1
+
/*
* enum ubi_open_mode - UBI volume open mode constants.
*
@@ -208,14 +211,15 @@
int ubi_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
int len, int check);
int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
- int offset, int len, int dtype);
+ int offset, int len);
int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
- int len, int dtype);
+ int len);
int ubi_leb_erase(struct ubi_volume_desc *desc, int lnum);
int ubi_leb_unmap(struct ubi_volume_desc *desc, int lnum);
-int ubi_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype);
+int ubi_leb_map(struct ubi_volume_desc *desc, int lnum);
int ubi_is_mapped(struct ubi_volume_desc *desc, int lnum);
int ubi_sync(int ubi_num);
+int ubi_flush(int ubi_num, int vol_id, int lnum);
/*
* This function is the same as the 'ubi_leb_read()' function, but it does not
@@ -226,25 +230,4 @@
{
return ubi_leb_read(desc, lnum, buf, offset, len, 0);
}
-
-/*
- * This function is the same as the 'ubi_leb_write()' functions, but it does
- * not have the data type argument.
- */
-static inline int ubi_write(struct ubi_volume_desc *desc, int lnum,
- const void *buf, int offset, int len)
-{
- return ubi_leb_write(desc, lnum, buf, offset, len, UBI_UNKNOWN);
-}
-
-/*
- * This function is the same as the 'ubi_leb_change()' functions, but it does
- * not have the data type argument.
- */
-static inline int ubi_change(struct ubi_volume_desc *desc, int lnum,
- const void *buf, int len)
-{
- return ubi_leb_change(desc, lnum, buf, len, UBI_UNKNOWN);
-}
-
#endif /* !__LINUX_UBI_H__ */
diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h
index 3c41097..8787349 100644
--- a/include/mtd/ubi-user.h
+++ b/include/mtd/ubi-user.h
@@ -196,23 +196,6 @@
#define UBI_MAX_RNVOL 32
/*
- * UBI data type hint constants.
- *
- * UBI_LONGTERM: long-term data
- * UBI_SHORTTERM: short-term data
- * UBI_UNKNOWN: data persistence is unknown
- *
- * These constants are used when data is written to UBI volumes in order to
- * help the UBI wear-leveling unit to find more appropriate physical
- * eraseblocks.
- */
-enum {
- UBI_LONGTERM = 1,
- UBI_SHORTTERM = 2,
- UBI_UNKNOWN = 3,
-};
-
-/*
* UBI volume type constants.
*
* @UBI_DYNAMIC_VOLUME: dynamic volume
@@ -375,25 +358,34 @@
* requests.
* @lnum: logical eraseblock number to change
* @bytes: how many bytes will be written to the logical eraseblock
- * @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN)
+ * @dtype: pass "3" for better compatibility with old kernels
* @padding: reserved for future, not used, has to be zeroed
+ *
+ * The @dtype field used to inform UBI about what kind of data will be written
+ * to the LEB: long term (value 1), short term (value 2), unknown (value 3).
+ * UBI tried to pick a PEB with lower erase counter for short term data and a
+ * PEB with higher erase counter for long term data. But this was not really
+ * used because users usually do not know this and could easily mislead UBI. We
+ * removed this feature in May 2012. UBI currently just ignores the @dtype
+ * field. But for better compatibility with older kernels it is recommended to
+ * set @dtype to 3 (unknown).
*/
struct ubi_leb_change_req {
__s32 lnum;
__s32 bytes;
- __s8 dtype;
+ __s8 dtype; /* obsolete, do not use! */
__s8 padding[7];
} __packed;
/**
* struct ubi_map_req - a data structure used in map LEB requests.
+ * @dtype: pass "3" for better compatibility with old kernels
* @lnum: logical eraseblock number to unmap
- * @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN)
* @padding: reserved for future, not used, has to be zeroed
*/
struct ubi_map_req {
__s32 lnum;
- __s8 dtype;
+ __s8 dtype; /* obsolete, do not use! */
__s8 padding[3];
} __packed;