nfsd: drop null test before destroy functions

Remove unneeded NULL test.

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);
  x = NULL;
-}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 46ec934..116940c 100644 (file)
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -217,10 +217,8 @@ void nfsd_reply_cache_shutdown(void)
        drc_hashtbl = NULL;
        drc_hashsize = 0;
 
-       if (drc_slab) {
-               kmem_cache_destroy(drc_slab);
-               drc_slab = NULL;
-       }
+       kmem_cache_destroy(drc_slab);
+       drc_slab = NULL;
 }
 
 /*