diff --git a/include/linux/cred.h b/include/linux/cred.h
index 4030896..adadf71 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -358,10 +358,12 @@
 #define current_security()	(current_cred_xxx(security))
 
 #ifdef CONFIG_USER_NS
-#define current_user_ns() (current_cred_xxx(user_ns))
+#define current_user_ns()	(current_cred_xxx(user_ns))
+#define task_user_ns(task)	(task_cred_xxx((task), user_ns))
 #else
 extern struct user_namespace init_user_ns;
-#define current_user_ns() (&init_user_ns)
+#define current_user_ns()	(&init_user_ns)
+#define task_user_ns(task)	(&init_user_ns)
 #endif