dm: convert ffs to __ffs

[deliverable/linux.git] / drivers / md / dm-region-hash.c

diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index b929fd5f4984bb67fbb62474e24e5af425758770..74cb7b991d41d80384e3aaf34baf030579cc93d6 100644 (file)
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -193,7 +193,7 @@ struct dm_region_hash *dm_region_hash_create(
        rh->max_recovery = max_recovery;
        rh->log = log;
        rh->region_size = region_size;
-       rh->region_shift = ffs(region_size) - 1;
+       rh->region_shift = __ffs(region_size);
        rwlock_init(&rh->hash_lock);
        rh->mask = nr_buckets - 1;
        rh->nr_buckets = nr_buckets;
@@ -249,9 +249,7 @@ void dm_region_hash_destroy(struct dm_region_hash *rh)
        if (rh->log)
                dm_dirty_log_destroy(rh->log);
 
-       if (rh->region_pool)
-               mempool_destroy(rh->region_pool);
-
+       mempool_destroy(rh->region_pool);
        vfree(rh->buckets);
        kfree(rh);
 }