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dm-bufio: use kzalloc_flex 

Avoid manual size calculations and use the proper helper.

Add __counted_by for extra runtime analysis.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
master
Rosen Penev 2026-03-25 21:13:54 -07:00 committed by Mikulas Patocka
parent fc1d438267
commit 5387815aa8
1 changed files with 2 additions and 2 deletions
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4
drivers/md/dm-bufio.c
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@ -391,7 +391,7 @@ struct dm_buffer_cache {
*/
unsigned int num_locks;
bool no_sleep;
struct buffer_tree trees[];
struct buffer_tree trees[] __counted_by(num_locks);
};
static DEFINE_STATIC_KEY_FALSE(no_sleep_enabled);
@ -2511,7 +2511,7 @@ struct dm_bufio_client *dm_bufio_client_create(struct block_device *bdev, unsign
}
num_locks = dm_num_hash_locks();
c = kzalloc(sizeof(*c) + (num_locks * sizeof(struct buffer_tree)), GFP_KERNEL);
c = kzalloc_flex(*c, cache.trees, num_locks);
if (!c) {
r = -ENOMEM;
goto bad_client;