Commit 5387815a authored by Rosen Penev's avatar Rosen Penev Committed by Mikulas Patocka
Browse files

dm-bufio: use kzalloc_flex 



Avoid manual size calculations and use the proper helper.

Add __counted_by for extra runtime analysis.

Signed-off-by: default avatarRosen Penev <rosenp@gmail.com>
Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
parent fc1d4382

drivers/md/dm-bufio.c

+2 −2
Original line number Diff line number Diff line
@@ -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;