Use KMEM_CACHE macro to create the nsproxy cache

The blessed way for standard caches is to use it.  Besides, this may give
this cache a better alignment.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Cedric Le Goater <clg@fr.ibm.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

kernel/nsproxy.c

@@ -203,8 +203,7 @@ int unshare_nsproxy_namespaces(unsigned long unshare_flags,
 
 static int __init nsproxy_cache_init(void)
 {
-	nsproxy_cachep = kmem_cache_create("nsproxy", sizeof(struct nsproxy),
-					   0, SLAB_PANIC, NULL);
+	nsproxy_cachep = KMEM_CACHE(nsproxy, SLAB_PANIC);
 	return 0;
 }