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dm: Use kzalloc for all structs with embedded biosets/mempools

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[ Upstream commit d377535405686f735b90a8ad4ba269484cd7c96e ]

mempool_init()/bioset_init() require that the mempools/biosets be zeroed
first; they probably should not _require_ this, but not allocating those
structs with kzalloc is a fairly nonsensical thing to do (calling
mempool_exit()/bioset_exit() on an uninitialized mempool/bioset is legal
and safe, but only works if said memory was zeroed.)

Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kent Overstreet 2018-06-05 05:26:33 -04:00 committed by Greg Kroah-Hartman
parent d14a94d03c
commit 1de0fd8286
7 changed files with 7 additions and 7 deletions
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2
drivers/md/dm-bio-prison-v1.c
View File

@ -33,7 +33,7 @@ static struct kmem_cache *_cell_cache;
*/
struct dm_bio_prison *dm_bio_prison_create(void)
{
struct dm_bio_prison *prison = kmalloc(sizeof(*prison), GFP_KERNEL);
struct dm_bio_prison *prison = kzalloc(sizeof(*prison), GFP_KERNEL);
if (!prison)
return NULL;

2
drivers/md/dm-bio-prison-v2.c
View File

@ -35,7 +35,7 @@ static struct kmem_cache *_cell_cache;
*/
struct dm_bio_prison_v2 *dm_bio_prison_create_v2(struct workqueue_struct *wq)
{
struct dm_bio_prison_v2 *prison = kmalloc(sizeof(*prison), GFP_KERNEL);
struct dm_bio_prison_v2 *prison = kzalloc(sizeof(*prison), GFP_KERNEL);
if (!prison)
return NULL;

2
drivers/md/dm-io.c
View File

@ -50,7 +50,7 @@ struct dm_io_client *dm_io_client_create(void)
struct dm_io_client *client;
unsigned min_ios = dm_get_reserved_bio_based_ios();
client = kmalloc(sizeof(*client), GFP_KERNEL);
client = kzalloc(sizeof(*client), GFP_KERNEL);
if (!client)
return ERR_PTR(-ENOMEM);

2
drivers/md/dm-kcopyd.c
View File

@ -892,7 +892,7 @@ struct dm_kcopyd_client *dm_kcopyd_client_create(struct dm_kcopyd_throttle *thro
int r = -ENOMEM;
struct dm_kcopyd_client *kc;
kc = kmalloc(sizeof(*kc), GFP_KERNEL);
kc = kzalloc(sizeof(*kc), GFP_KERNEL);
if (!kc)
return ERR_PTR(-ENOMEM);

2
drivers/md/dm-region-hash.c
View File

@ -179,7 +179,7 @@ struct dm_region_hash *dm_region_hash_create(
;
nr_buckets >>= 1;
rh = kmalloc(sizeof(*rh), GFP_KERNEL);
rh = kzalloc(sizeof(*rh), GFP_KERNEL);
if (!rh) {
DMERR("unable to allocate region hash memory");
return ERR_PTR(-ENOMEM);

2
drivers/md/dm-snap.c
View File

@ -1136,7 +1136,7 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
origin_mode = FMODE_WRITE;
}
s = kmalloc(sizeof(*s), GFP_KERNEL);
s = kzalloc(sizeof(*s), GFP_KERNEL);
if (!s) {
ti->error = "Cannot allocate private snapshot structure";
r = -ENOMEM;

2
drivers/md/dm-thin.c
View File

@ -2962,7 +2962,7 @@ static struct pool *pool_create(struct mapped_device *pool_md,
return (struct pool *)pmd;
}
pool = kmalloc(sizeof(*pool), GFP_KERNEL);
pool = kzalloc(sizeof(*pool), GFP_KERNEL);
if (!pool) {
*error = "Error allocating memory for pool";
err_p = ERR_PTR(-ENOMEM);