nfs: merge nfs_pgio_data into _header
struct nfs_pgio_data only exists as a member of nfs_pgio_header, but is
passed around everywhere, because there used to be multiple _data structs
per _header. Many of these functions then use the _data to find a pointer
to the _header. This patch cleans this up by merging the nfs_pgio_data
structure into nfs_pgio_header and passing nfs_pgio_header around instead.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c
index d2eba1c..537e7f7 100644
--- a/fs/nfs/filelayout/filelayout.c
+++ b/fs/nfs/filelayout/filelayout.c
@@ -84,19 +84,18 @@
BUG();
}
-static void filelayout_reset_write(struct nfs_pgio_data *data)
+static void filelayout_reset_write(struct nfs_pgio_header *hdr)
{
- struct nfs_pgio_header *hdr = data->header;
- struct rpc_task *task = &data->task;
+ struct rpc_task *task = &hdr->task;
if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) {
dprintk("%s Reset task %5u for i/o through MDS "
"(req %s/%llu, %u bytes @ offset %llu)\n", __func__,
- data->task.tk_pid,
+ hdr->task.tk_pid,
hdr->inode->i_sb->s_id,
(unsigned long long)NFS_FILEID(hdr->inode),
- data->args.count,
- (unsigned long long)data->args.offset);
+ hdr->args.count,
+ (unsigned long long)hdr->args.offset);
task->tk_status = pnfs_write_done_resend_to_mds(hdr->inode,
&hdr->pages,
@@ -105,19 +104,18 @@
}
}
-static void filelayout_reset_read(struct nfs_pgio_data *data)
+static void filelayout_reset_read(struct nfs_pgio_header *hdr)
{
- struct nfs_pgio_header *hdr = data->header;
- struct rpc_task *task = &data->task;
+ struct rpc_task *task = &hdr->task;
if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) {
dprintk("%s Reset task %5u for i/o through MDS "
"(req %s/%llu, %u bytes @ offset %llu)\n", __func__,
- data->task.tk_pid,
+ hdr->task.tk_pid,
hdr->inode->i_sb->s_id,
(unsigned long long)NFS_FILEID(hdr->inode),
- data->args.count,
- (unsigned long long)data->args.offset);
+ hdr->args.count,
+ (unsigned long long)hdr->args.offset);
task->tk_status = pnfs_read_done_resend_to_mds(hdr->inode,
&hdr->pages,
@@ -243,18 +241,17 @@
/* NFS_PROTO call done callback routines */
static int filelayout_read_done_cb(struct rpc_task *task,
- struct nfs_pgio_data *data)
+ struct nfs_pgio_header *hdr)
{
- struct nfs_pgio_header *hdr = data->header;
int err;
- trace_nfs4_pnfs_read(data, task->tk_status);
- err = filelayout_async_handle_error(task, data->args.context->state,
- data->ds_clp, hdr->lseg);
+ trace_nfs4_pnfs_read(hdr, task->tk_status);
+ err = filelayout_async_handle_error(task, hdr->args.context->state,
+ hdr->ds_clp, hdr->lseg);
switch (err) {
case -NFS4ERR_RESET_TO_MDS:
- filelayout_reset_read(data);
+ filelayout_reset_read(hdr);
return task->tk_status;
case -EAGAIN:
rpc_restart_call_prepare(task);
@@ -270,15 +267,14 @@
* rfc5661 is not clear about which credential should be used.
*/
static void
-filelayout_set_layoutcommit(struct nfs_pgio_data *wdata)
+filelayout_set_layoutcommit(struct nfs_pgio_header *hdr)
{
- struct nfs_pgio_header *hdr = wdata->header;
if (FILELAYOUT_LSEG(hdr->lseg)->commit_through_mds ||
- wdata->res.verf->committed == NFS_FILE_SYNC)
+ hdr->res.verf->committed == NFS_FILE_SYNC)
return;
- pnfs_set_layoutcommit(wdata);
+ pnfs_set_layoutcommit(hdr);
dprintk("%s inode %lu pls_end_pos %lu\n", __func__, hdr->inode->i_ino,
(unsigned long) NFS_I(hdr->inode)->layout->plh_lwb);
}
@@ -305,83 +301,82 @@
*/
static void filelayout_read_prepare(struct rpc_task *task, void *data)
{
- struct nfs_pgio_data *rdata = data;
+ struct nfs_pgio_header *hdr = data;
- if (unlikely(test_bit(NFS_CONTEXT_BAD, &rdata->args.context->flags))) {
+ if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) {
rpc_exit(task, -EIO);
return;
}
- if (filelayout_reset_to_mds(rdata->header->lseg)) {
+ if (filelayout_reset_to_mds(hdr->lseg)) {
dprintk("%s task %u reset io to MDS\n", __func__, task->tk_pid);
- filelayout_reset_read(rdata);
+ filelayout_reset_read(hdr);
rpc_exit(task, 0);
return;
}
- rdata->pgio_done_cb = filelayout_read_done_cb;
+ hdr->pgio_done_cb = filelayout_read_done_cb;
- if (nfs41_setup_sequence(rdata->ds_clp->cl_session,
- &rdata->args.seq_args,
- &rdata->res.seq_res,
+ if (nfs41_setup_sequence(hdr->ds_clp->cl_session,
+ &hdr->args.seq_args,
+ &hdr->res.seq_res,
task))
return;
- if (nfs4_set_rw_stateid(&rdata->args.stateid, rdata->args.context,
- rdata->args.lock_context, FMODE_READ) == -EIO)
+ if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context,
+ hdr->args.lock_context, FMODE_READ) == -EIO)
rpc_exit(task, -EIO); /* lost lock, terminate I/O */
}
static void filelayout_read_call_done(struct rpc_task *task, void *data)
{
- struct nfs_pgio_data *rdata = data;
+ struct nfs_pgio_header *hdr = data;
dprintk("--> %s task->tk_status %d\n", __func__, task->tk_status);
- if (test_bit(NFS_IOHDR_REDO, &rdata->header->flags) &&
+ if (test_bit(NFS_IOHDR_REDO, &hdr->flags) &&
task->tk_status == 0) {
- nfs41_sequence_done(task, &rdata->res.seq_res);
+ nfs41_sequence_done(task, &hdr->res.seq_res);
return;
}
/* Note this may cause RPC to be resent */
- rdata->header->mds_ops->rpc_call_done(task, data);
+ hdr->mds_ops->rpc_call_done(task, data);
}
static void filelayout_read_count_stats(struct rpc_task *task, void *data)
{
- struct nfs_pgio_data *rdata = data;
+ struct nfs_pgio_header *hdr = data;
- rpc_count_iostats(task, NFS_SERVER(rdata->header->inode)->client->cl_metrics);
+ rpc_count_iostats(task, NFS_SERVER(hdr->inode)->client->cl_metrics);
}
static void filelayout_read_release(void *data)
{
- struct nfs_pgio_data *rdata = data;
- struct pnfs_layout_hdr *lo = rdata->header->lseg->pls_layout;
+ struct nfs_pgio_header *hdr = data;
+ struct pnfs_layout_hdr *lo = hdr->lseg->pls_layout;
filelayout_fenceme(lo->plh_inode, lo);
- nfs_put_client(rdata->ds_clp);
- rdata->header->mds_ops->rpc_release(data);
+ nfs_put_client(hdr->ds_clp);
+ hdr->mds_ops->rpc_release(data);
}
static int filelayout_write_done_cb(struct rpc_task *task,
- struct nfs_pgio_data *data)
+ struct nfs_pgio_header *hdr)
{
- struct nfs_pgio_header *hdr = data->header;
int err;
- trace_nfs4_pnfs_write(data, task->tk_status);
- err = filelayout_async_handle_error(task, data->args.context->state,
- data->ds_clp, hdr->lseg);
+ trace_nfs4_pnfs_write(hdr, task->tk_status);
+ err = filelayout_async_handle_error(task, hdr->args.context->state,
+ hdr->ds_clp, hdr->lseg);
switch (err) {
case -NFS4ERR_RESET_TO_MDS:
- filelayout_reset_write(data);
+ filelayout_reset_write(hdr);
return task->tk_status;
case -EAGAIN:
rpc_restart_call_prepare(task);
return -EAGAIN;
}
- filelayout_set_layoutcommit(data);
+ filelayout_set_layoutcommit(hdr);
return 0;
}
@@ -419,57 +414,57 @@
static void filelayout_write_prepare(struct rpc_task *task, void *data)
{
- struct nfs_pgio_data *wdata = data;
+ struct nfs_pgio_header *hdr = data;
- if (unlikely(test_bit(NFS_CONTEXT_BAD, &wdata->args.context->flags))) {
+ if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) {
rpc_exit(task, -EIO);
return;
}
- if (filelayout_reset_to_mds(wdata->header->lseg)) {
+ if (filelayout_reset_to_mds(hdr->lseg)) {
dprintk("%s task %u reset io to MDS\n", __func__, task->tk_pid);
- filelayout_reset_write(wdata);
+ filelayout_reset_write(hdr);
rpc_exit(task, 0);
return;
}
- if (nfs41_setup_sequence(wdata->ds_clp->cl_session,
- &wdata->args.seq_args,
- &wdata->res.seq_res,
+ if (nfs41_setup_sequence(hdr->ds_clp->cl_session,
+ &hdr->args.seq_args,
+ &hdr->res.seq_res,
task))
return;
- if (nfs4_set_rw_stateid(&wdata->args.stateid, wdata->args.context,
- wdata->args.lock_context, FMODE_WRITE) == -EIO)
+ if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context,
+ hdr->args.lock_context, FMODE_WRITE) == -EIO)
rpc_exit(task, -EIO); /* lost lock, terminate I/O */
}
static void filelayout_write_call_done(struct rpc_task *task, void *data)
{
- struct nfs_pgio_data *wdata = data;
+ struct nfs_pgio_header *hdr = data;
- if (test_bit(NFS_IOHDR_REDO, &wdata->header->flags) &&
+ if (test_bit(NFS_IOHDR_REDO, &hdr->flags) &&
task->tk_status == 0) {
- nfs41_sequence_done(task, &wdata->res.seq_res);
+ nfs41_sequence_done(task, &hdr->res.seq_res);
return;
}
/* Note this may cause RPC to be resent */
- wdata->header->mds_ops->rpc_call_done(task, data);
+ hdr->mds_ops->rpc_call_done(task, data);
}
static void filelayout_write_count_stats(struct rpc_task *task, void *data)
{
- struct nfs_pgio_data *wdata = data;
+ struct nfs_pgio_header *hdr = data;
- rpc_count_iostats(task, NFS_SERVER(wdata->header->inode)->client->cl_metrics);
+ rpc_count_iostats(task, NFS_SERVER(hdr->inode)->client->cl_metrics);
}
static void filelayout_write_release(void *data)
{
- struct nfs_pgio_data *wdata = data;
- struct pnfs_layout_hdr *lo = wdata->header->lseg->pls_layout;
+ struct nfs_pgio_header *hdr = data;
+ struct pnfs_layout_hdr *lo = hdr->lseg->pls_layout;
filelayout_fenceme(lo->plh_inode, lo);
- nfs_put_client(wdata->ds_clp);
- wdata->header->mds_ops->rpc_release(data);
+ nfs_put_client(hdr->ds_clp);
+ hdr->mds_ops->rpc_release(data);
}
static void filelayout_commit_prepare(struct rpc_task *task, void *data)
@@ -529,19 +524,18 @@
};
static enum pnfs_try_status
-filelayout_read_pagelist(struct nfs_pgio_data *data)
+filelayout_read_pagelist(struct nfs_pgio_header *hdr)
{
- struct nfs_pgio_header *hdr = data->header;
struct pnfs_layout_segment *lseg = hdr->lseg;
struct nfs4_pnfs_ds *ds;
struct rpc_clnt *ds_clnt;
- loff_t offset = data->args.offset;
+ loff_t offset = hdr->args.offset;
u32 j, idx;
struct nfs_fh *fh;
dprintk("--> %s ino %lu pgbase %u req %Zu@%llu\n",
__func__, hdr->inode->i_ino,
- data->args.pgbase, (size_t)data->args.count, offset);
+ hdr->args.pgbase, (size_t)hdr->args.count, offset);
/* Retrieve the correct rpc_client for the byte range */
j = nfs4_fl_calc_j_index(lseg, offset);
@@ -559,30 +553,29 @@
/* No multipath support. Use first DS */
atomic_inc(&ds->ds_clp->cl_count);
- data->ds_clp = ds->ds_clp;
- data->ds_idx = idx;
+ hdr->ds_clp = ds->ds_clp;
+ hdr->ds_idx = idx;
fh = nfs4_fl_select_ds_fh(lseg, j);
if (fh)
- data->args.fh = fh;
+ hdr->args.fh = fh;
- data->args.offset = filelayout_get_dserver_offset(lseg, offset);
- data->mds_offset = offset;
+ hdr->args.offset = filelayout_get_dserver_offset(lseg, offset);
+ hdr->mds_offset = offset;
/* Perform an asynchronous read to ds */
- nfs_initiate_pgio(ds_clnt, data,
+ nfs_initiate_pgio(ds_clnt, hdr,
&filelayout_read_call_ops, 0, RPC_TASK_SOFTCONN);
return PNFS_ATTEMPTED;
}
/* Perform async writes. */
static enum pnfs_try_status
-filelayout_write_pagelist(struct nfs_pgio_data *data, int sync)
+filelayout_write_pagelist(struct nfs_pgio_header *hdr, int sync)
{
- struct nfs_pgio_header *hdr = data->header;
struct pnfs_layout_segment *lseg = hdr->lseg;
struct nfs4_pnfs_ds *ds;
struct rpc_clnt *ds_clnt;
- loff_t offset = data->args.offset;
+ loff_t offset = hdr->args.offset;
u32 j, idx;
struct nfs_fh *fh;
@@ -598,21 +591,20 @@
return PNFS_NOT_ATTEMPTED;
dprintk("%s ino %lu sync %d req %Zu@%llu DS: %s cl_count %d\n",
- __func__, hdr->inode->i_ino, sync, (size_t) data->args.count,
+ __func__, hdr->inode->i_ino, sync, (size_t) hdr->args.count,
offset, ds->ds_remotestr, atomic_read(&ds->ds_clp->cl_count));
- data->pgio_done_cb = filelayout_write_done_cb;
+ hdr->pgio_done_cb = filelayout_write_done_cb;
atomic_inc(&ds->ds_clp->cl_count);
- data->ds_clp = ds->ds_clp;
- data->ds_idx = idx;
+ hdr->ds_clp = ds->ds_clp;
+ hdr->ds_idx = idx;
fh = nfs4_fl_select_ds_fh(lseg, j);
if (fh)
- data->args.fh = fh;
-
- data->args.offset = filelayout_get_dserver_offset(lseg, offset);
+ hdr->args.fh = fh;
+ hdr->args.offset = filelayout_get_dserver_offset(lseg, offset);
/* Perform an asynchronous write */
- nfs_initiate_pgio(ds_clnt, data,
+ nfs_initiate_pgio(ds_clnt, hdr,
&filelayout_write_call_ops, sync,
RPC_TASK_SOFTCONN);
return PNFS_ATTEMPTED;