--- zzzz-none-000/linux-2.6.32.61/include/net/netns/hash.h	2013-06-10 09:43:48.000000000 +0000
+++ virian-300e-630/linux-2.6.32.61/include/net/netns/hash.h	2011-01-18 10:33:14.000000000 +0000
@@ -5,7 +5,11 @@
 
 struct net;
 
-static inline unsigned net_hash_mix(struct net *net)
+static inline unsigned net_hash_mix(struct net *net
+#ifndef CONFIG_NET_NS
+    __attribute__((unused))
+#endif/*--- #ifndef CONFIG_NET_NS ---*/
+        )
 {
 #ifdef CONFIG_NET_NS
 	/*