2 files changed, 13 insertions, 0 deletions

diff --git a/include/linux/cgroup_subsys.h b/include/linux/cgroup_subsys.h
index cbadc3b5dbc0..651ff0869b2d 100644
--- a/include/linux/cgroup_subsys.h
+++ b/include/linux/cgroup_subsys.h
@@ -24,3 +24,9 @@ SUBSYS(debug)
 #endif
 
 /* */
+
+#ifdef CONFIG_CGROUP_NS
+SUBSYS(ns)
+#endif
+
+/* */
diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h
index 033a648709b6..f1eca68751a9 100644
--- a/include/linux/nsproxy.h
+++ b/include/linux/nsproxy.h
@@ -55,4 +55,11 @@ static inline void exit_task_namespaces(struct task_struct *p)
                 put_nsproxy(ns);
         }
 }
+
+#ifdef CONFIG_CGROUP_NS
+int ns_cgroup_clone(struct task_struct *tsk);
+#else
+static inline int ns_cgroup_clone(struct task_struct *tsk) { return 0; }
+#endif
+
 #endif