diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 5b6b003..3b67fd7 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -7079,6 +7079,12 @@
 	return ret;
 }
 
+static int mem_cgroup_allow_attach(struct cgroup_subsys_state *css,
+				   struct cgroup_taskset *tset)
+{
+	return subsys_cgroup_allow_attach(css, tset);
+}
+
 static void mem_cgroup_cancel_attach(struct cgroup_subsys_state *css,
 				     struct cgroup_taskset *tset)
 {
@@ -7247,6 +7253,11 @@
 {
 	return 0;
 }
+static int mem_cgroup_allow_attach(struct cgroup_subsys_state *css,
+				   struct cgroup_taskset *tset)
+{
+	return 0;
+}
 static void mem_cgroup_cancel_attach(struct cgroup_subsys_state *css,
 				     struct cgroup_taskset *tset)
 {
@@ -7282,6 +7293,7 @@
 	.can_attach = mem_cgroup_can_attach,
 	.cancel_attach = mem_cgroup_cancel_attach,
 	.attach = mem_cgroup_move_task,
+	.allow_attach = mem_cgroup_allow_attach,
 	.bind = mem_cgroup_bind,
 	.base_cftypes = mem_cgroup_files,
 	.early_init = 0,