tree 2f055892081b955b52b037db6628dd7e9c08b293
parent 71cdb6978a80f9f6c51bef0622388c1414c2fe32
author Julia Lawall <Julia.Lawall@lip6.fr> 1442146505 +0200
committer Mike Snitzer <snitzer@redhat.com> 1446332760 -0400

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>