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md/raid0: Move queue limit setup before r0conf initialization 

Prepare for making logical blocksize configurable. This change has no
impact until logical block size becomes configurable.

Move raid0_set_limits() before create_strip_zones(). It is safe as fields
modified in create_strip_zones() do not involve mddev configuration, and
rdev modifications there are not used in raid0_set_limits().

'blksize' in create_strip_zones() fetches mddev's logical block size,
which is already the maximum aross all rdevs, so the later max() can be
removed.

Link: https://lore.kernel.org/linux-raid/20251103125757.1405796-4-linan666@huaweicloud.com
Signed-off-by: Li Nan <linan122@huawei.com>
Reviewed-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Yu Kuai <yukuai@fnnas.com>
This commit is contained in:
Li Nan 2025-11-03 20:57:55 +08:00 committed by Yu Kuai
parent 381a3ce1c0
commit 2107457e31
1 changed files with 7 additions and 9 deletions
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16
drivers/md/raid0.c
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@ -68,7 +68,7 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
struct strip_zone *zone;
int cnt;
struct r0conf *conf = kzalloc(sizeof(*conf), GFP_KERNEL);
unsigned blksize = 512;
unsigned int blksize = queue_logical_block_size(mddev->gendisk->queue);
*private_conf = ERR_PTR(-ENOMEM);
if (!conf)
@ -84,9 +84,6 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
sector_div(sectors, mddev->chunk_sectors);
rdev1->sectors = sectors * mddev->chunk_sectors;
blksize = max(blksize, queue_logical_block_size(
rdev1->bdev->bd_disk->queue));
rdev_for_each(rdev2, mddev) {
pr_debug("md/raid0:%s: comparing %pg(%llu)"
" with %pg(%llu)\n",
@ -405,6 +402,12 @@ static int raid0_run(struct mddev *mddev)
if (md_check_no_bitmap(mddev))
return -EINVAL;
if (!mddev_is_dm(mddev)) {
ret = raid0_set_limits(mddev);
if (ret)
return ret;
}
/* if private is not null, we are here after takeover */
if (mddev->private == NULL) {
ret = create_strip_zones(mddev, &conf);
@ -413,11 +416,6 @@ static int raid0_run(struct mddev *mddev)
mddev->private = conf;
}
conf = mddev->private;
if (!mddev_is_dm(mddev)) {
ret = raid0_set_limits(mddev);
if (ret)
return ret;
}
/* calculate array device size */
md_set_array_sectors(mddev, raid0_size(mddev, 0, 0));