diff options
| author | Mike Snitzer <snitzer@kernel.org> | 2023-03-27 14:30:46 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2023-03-30 15:57:51 -0400 |
| commit | b6279f82eb11a1f380af3a26acf921c37505fc86 (patch) | |
| tree | fe649f36128a1b8be8992b563ce7d7b4a9e29ee3 | |
| parent | c6273411d1803ed03d4f0628bc629a8c45774351 (diff) | |
dm bio prison v1: intelligently size dm_bio_prison's prison_regions
Size the dm_bio_prison's number of prison_region structs using
dm_num_hash_locks().
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
| -rw-r--r-- | drivers/md/dm-bio-prison-v1.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/md/dm-bio-prison-v1.c b/drivers/md/dm-bio-prison-v1.c index a7930ad1878b..6b726b8b300d 100644 --- a/drivers/md/dm-bio-prison-v1.c +++ b/drivers/md/dm-bio-prison-v1.c @@ -16,7 +16,6 @@ /*----------------------------------------------------------------*/ -#define NR_LOCKS 64 #define MIN_CELLS 1024 struct prison_region { @@ -27,7 +26,7 @@ struct prison_region { struct dm_bio_prison { mempool_t cell_pool; unsigned int num_locks; - struct prison_region regions[NR_LOCKS]; + struct prison_region regions[]; }; static struct kmem_cache *_cell_cache; @@ -41,12 +40,14 @@ static struct kmem_cache *_cell_cache; struct dm_bio_prison *dm_bio_prison_create(void) { int ret; - unsigned i; - struct dm_bio_prison *prison = kzalloc(sizeof(*prison), GFP_KERNEL); + unsigned int i, num_locks; + struct dm_bio_prison *prison; + num_locks = dm_num_hash_locks(); + prison = kzalloc(struct_size(prison, regions, num_locks), GFP_KERNEL); if (!prison) return NULL; - prison->num_locks = NR_LOCKS; + prison->num_locks = num_locks; for (i = 0; i < prison->num_locks; i++) { spin_lock_init(&prison->regions[i].lock); |