md: Convert mddev->new_chunk to sectors.
A straight-forward conversion which gets rid of some
multiplications/divisions/shifts. The patch also introduces a couple
of new ones, most of which are due to conf->chunk_size still being
represented in bytes. This will be cleaned up in subsequent patches.
Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 1e4fd5e..bc3564c 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3358,8 +3358,8 @@
if ((bvm->bi_rw & 1) == WRITE)
return biovec->bv_len; /* always allow writes to be mergeable */
- if (mddev->new_chunk < mddev->chunk_sectors << 9)
- chunk_sectors = mddev->new_chunk >> 9;
+ if (mddev->new_chunk_sectors < mddev->chunk_sectors)
+ chunk_sectors = mddev->new_chunk_sectors;
max = (chunk_sectors - ((sector & (chunk_sectors - 1)) + bio_sectors)) << 9;
if (max < 0) max = 0;
if (max <= biovec->bv_len && bio_sectors == 0)
@@ -3375,8 +3375,8 @@
unsigned int chunk_sectors = mddev->chunk_sectors;
unsigned int bio_sectors = bio->bi_size >> 9;
- if (mddev->new_chunk < mddev->chunk_sectors << 9)
- chunk_sectors = mddev->new_chunk >> 9;
+ if (mddev->new_chunk_sectors < mddev->chunk_sectors)
+ chunk_sectors = mddev->new_chunk_sectors;
return chunk_sectors >=
((sector & (chunk_sectors - 1)) + bio_sectors);
}
@@ -3791,8 +3791,8 @@
* If old and new chunk sizes differ, we need to process the
* largest of these
*/
- if (mddev->new_chunk > mddev->chunk_sectors << 9)
- reshape_sectors = mddev->new_chunk / 512;
+ if (mddev->new_chunk_sectors > mddev->chunk_sectors)
+ reshape_sectors = mddev->new_chunk_sectors;
else
reshape_sectors = mddev->chunk_sectors;
@@ -4304,7 +4304,7 @@
}
sectors &= ~((sector_t)mddev->chunk_sectors - 1);
- sectors &= ~((sector_t)mddev->new_chunk/512 - 1);
+ sectors &= ~((sector_t)mddev->new_chunk_sectors - 1);
return sectors * (raid_disks - conf->max_degraded);
}
@@ -4336,10 +4336,11 @@
return ERR_PTR(-EINVAL);
}
- if (!mddev->new_chunk || mddev->new_chunk % PAGE_SIZE ||
- !is_power_of_2(mddev->new_chunk)) {
+ if (!mddev->new_chunk_sectors ||
+ (mddev->new_chunk_sectors << 9) % PAGE_SIZE ||
+ !is_power_of_2(mddev->new_chunk_sectors)) {
printk(KERN_ERR "raid5: invalid chunk size %d for %s\n",
- mddev->new_chunk, mdname(mddev));
+ mddev->new_chunk_sectors << 9, mdname(mddev));
return ERR_PTR(-EINVAL);
}
@@ -4402,7 +4403,7 @@
conf->fullsync = 1;
}
- conf->chunk_size = mddev->new_chunk;
+ conf->chunk_size = mddev->new_chunk_sectors << 9;
conf->level = mddev->new_level;
if (conf->level == 6)
conf->max_degraded = 2;
@@ -4476,7 +4477,7 @@
* geometry.
*/
here_new = mddev->reshape_position;
- if (sector_div(here_new, (mddev->new_chunk>>9)*
+ if (sector_div(here_new, mddev->new_chunk_sectors *
(mddev->raid_disks - max_degraded))) {
printk(KERN_ERR "raid5: reshape_position not "
"on a stripe boundary\n");
@@ -4499,7 +4500,7 @@
} else {
BUG_ON(mddev->level != mddev->new_level);
BUG_ON(mddev->layout != mddev->new_layout);
- BUG_ON(mddev->chunk_sectors << 9 != mddev->new_chunk);
+ BUG_ON(mddev->chunk_sectors != mddev->new_chunk_sectors);
BUG_ON(mddev->delta_disks != 0);
}
@@ -4851,7 +4852,7 @@
if (mddev->delta_disks == 0 &&
mddev->new_layout == mddev->layout &&
- mddev->new_chunk == mddev->chunk_sectors << 9)
+ mddev->new_chunk_sectors == mddev->chunk_sectors)
return -EINVAL; /* nothing to do */
if (mddev->bitmap)
/* Cannot grow a bitmap yet */
@@ -4881,9 +4882,11 @@
*/
if (((mddev->chunk_sectors << 9) / STRIPE_SIZE) * 4
> conf->max_nr_stripes ||
- (mddev->new_chunk / STRIPE_SIZE) * 4 > conf->max_nr_stripes) {
+ ((mddev->new_chunk_sectors << 9) / STRIPE_SIZE) * 4
+ > conf->max_nr_stripes) {
printk(KERN_WARNING "raid5: reshape: not enough stripes. Needed %lu\n",
- (max(mddev->chunk_sectors << 9, mddev->new_chunk)
+ (max(mddev->chunk_sectors << 9,
+ mddev->new_chunk_sectors << 9)
/ STRIPE_SIZE)*4);
return -ENOSPC;
}
@@ -4929,7 +4932,7 @@
conf->previous_raid_disks = conf->raid_disks;
conf->raid_disks += mddev->delta_disks;
conf->prev_chunk = conf->chunk_size;
- conf->chunk_size = mddev->new_chunk;
+ conf->chunk_size = mddev->new_chunk_sectors << 9;
conf->prev_algo = conf->algorithm;
conf->algorithm = mddev->new_layout;
if (mddev->delta_disks < 0)
@@ -5114,7 +5117,7 @@
mddev->new_level = 5;
mddev->new_layout = ALGORITHM_LEFT_SYMMETRIC;
- mddev->new_chunk = chunksect << 9;
+ mddev->new_chunk_sectors = chunksect;
return setup_conf(mddev);
}
@@ -5185,7 +5188,7 @@
}
if (new_chunk > 0) {
conf->chunk_size = new_chunk;
- mddev->new_chunk = new_chunk;
+ mddev->new_chunk_sectors = new_chunk >> 9;
mddev->chunk_sectors = new_chunk >> 9;
}
set_bit(MD_CHANGE_DEVS, &mddev->flags);
@@ -5194,7 +5197,7 @@
if (new_layout >= 0)
mddev->new_layout = new_layout;
if (new_chunk > 0)
- mddev->new_chunk = new_chunk;
+ mddev->new_chunk_sectors = new_chunk >> 9;
}
return 0;
}
@@ -5219,7 +5222,7 @@
if (new_layout >= 0)
mddev->new_layout = new_layout;
if (new_chunk > 0)
- mddev->new_chunk = new_chunk;
+ mddev->new_chunk_sectors = new_chunk >> 9;
return 0;
}