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authorJulia Lawall <Julia.Lawall@lip6.fr>2015-09-13 15:15:05 +0300
committerMike Snitzer <snitzer@redhat.com>2015-11-01 02:06:00 +0300
commit6f65985e2636c0b170eade6a72d216632f065e26 (patch)
tree2f055892081b955b52b037db6628dd7e9c08b293 /drivers/md/dm-log-userspace-base.c
parent71cdb6978a80f9f6c51bef0622388c1414c2fe32 (diff)
downloadlinux-6f65985e2636c0b170eade6a72d216632f065e26.tar.xz
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-log-userspace-base.c')
-rw-r--r--drivers/md/dm-log-userspace-base.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/md/dm-log-userspace-base.c b/drivers/md/dm-log-userspace-base.c
index 058256d2eeea..53b7b06d0aa8 100644
--- a/drivers/md/dm-log-userspace-base.c
+++ b/drivers/md/dm-log-userspace-base.c
@@ -313,8 +313,7 @@ static int userspace_ctr(struct dm_dirty_log *log, struct dm_target *ti,
out:
kfree(devices_rdata);
if (r) {
- if (lc->flush_entry_pool)
- mempool_destroy(lc->flush_entry_pool);
+ mempool_destroy(lc->flush_entry_pool);
kfree(lc);
kfree(ctr_str);
} else {