copy address of proc_ns_ops into ns_common

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index 6bf8177..1491ad0 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -91,6 +91,7 @@
 		kmem_cache_free(user_ns_cachep, ns);
 		return ret;
 	}
+	ns->ns.ops = &userns_operations;
 
 	atomic_set(&ns->count, 1);
 	/* Leave the new->user_ns reference with the new user namespace. */