diff options
Diffstat (limited to 'drivers/md/persistent-data/dm-transaction-manager.c')
| -rw-r--r-- | drivers/md/persistent-data/dm-transaction-manager.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/md/persistent-data/dm-transaction-manager.c b/drivers/md/persistent-data/dm-transaction-manager.c index d247a35da3c6..81da1a26042e 100644 --- a/drivers/md/persistent-data/dm-transaction-manager.c +++ b/drivers/md/persistent-data/dm-transaction-manager.c @@ -25,8 +25,8 @@ struct shadow_info { /* * It would be nice if we scaled with the size of transaction. */ -#define HASH_SIZE 256 -#define HASH_MASK (HASH_SIZE - 1) +#define DM_HASH_SIZE 256 +#define DM_HASH_MASK (DM_HASH_SIZE - 1) struct dm_transaction_manager { int is_clone; @@ -36,7 +36,7 @@ struct dm_transaction_manager { struct dm_space_map *sm; spinlock_t lock; - struct hlist_head buckets[HASH_SIZE]; + struct hlist_head buckets[DM_HASH_SIZE]; }; /*----------------------------------------------------------------*/ @@ -44,12 +44,11 @@ struct dm_transaction_manager { static int is_shadow(struct dm_transaction_manager *tm, dm_block_t b) { int r = 0; - unsigned bucket = dm_hash_block(b, HASH_MASK); + unsigned bucket = dm_hash_block(b, DM_HASH_MASK); struct shadow_info *si; - struct hlist_node *n; spin_lock(&tm->lock); - hlist_for_each_entry(si, n, tm->buckets + bucket, hlist) + hlist_for_each_entry(si, tm->buckets + bucket, hlist) if (si->where == b) { r = 1; break; @@ -71,7 +70,7 @@ static void insert_shadow(struct dm_transaction_manager *tm, dm_block_t b) si = kmalloc(sizeof(*si), GFP_NOIO); if (si) { si->where = b; - bucket = dm_hash_block(b, HASH_MASK); + bucket = dm_hash_block(b, DM_HASH_MASK); spin_lock(&tm->lock); hlist_add_head(&si->hlist, tm->buckets + bucket); spin_unlock(&tm->lock); @@ -81,14 +80,14 @@ static void insert_shadow(struct dm_transaction_manager *tm, dm_block_t b) static void wipe_shadow_table(struct dm_transaction_manager *tm) { struct shadow_info *si; - struct hlist_node *n, *tmp; + struct hlist_node *tmp; struct hlist_head *bucket; int i; spin_lock(&tm->lock); - for (i = 0; i < HASH_SIZE; i++) { + for (i = 0; i < DM_HASH_SIZE; i++) { bucket = tm->buckets + i; - hlist_for_each_entry_safe(si, n, tmp, bucket, hlist) + hlist_for_each_entry_safe(si, tmp, bucket, hlist) kfree(si); INIT_HLIST_HEAD(bucket); @@ -115,7 +114,7 @@ static struct dm_transaction_manager *dm_tm_create(struct dm_block_manager *bm, tm->sm = sm; spin_lock_init(&tm->lock); - for (i = 0; i < HASH_SIZE; i++) + for (i = 0; i < DM_HASH_SIZE; i++) INIT_HLIST_HEAD(tm->buckets + i); return tm; |