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authorJulia Lawall <Julia.Lawall@lip6.fr>2015-09-13 14:15:05 +0200
committerMike Snitzer <snitzer@redhat.com>2015-10-31 19:06:00 -0400
commit6f65985e2636c0b170eade6a72d216632f065e26 (patch)
tree2f055892081b955b52b037db6628dd7e9c08b293 /drivers/md/dm-region-hash.c
parent71cdb6978a80f9f6c51bef0622388c1414c2fe32 (diff)
dm: drop NULL test before kmem_cache_destroy() and mempool_destroy()
Remove DM's unneeded NULL tests before calling these destroy functions, now that they check for NULL, thanks to these v4.3 commits: 3942d2991 ("mm/slab_common: allow NULL cache pointer in kmem_cache_destroy()") 4e3ca3e03 ("mm/mempool: allow NULL `pool' pointer in mempool_destroy()") The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x; @@ -if (x != NULL) \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-region-hash.c')
-rw-r--r--drivers/md/dm-region-hash.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index b929fd5f4984..f3d608bedffe 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -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);
}