criu: handle new cgroup layout

src/lxc/criu.c

@@ -887,6 +887,7 @@ static void do_restore(struct lxc_container *c, int status_pipe, struct migrate_
 	struct lxc_handler *handler;
 	int status = 0;
 	int pipes[2] = {-1, -1};
+	struct cgroup_ops *cgroup_ops;
 
 	/* Try to detach from the current controlling tty if it exists.
 	 * Otherwise, lxc_init (via lxc_console) will attach the container's
@@ -907,9 +908,25 @@ static void do_restore(struct lxc_container *c, int status_pipe, struct migrate_
 
 	if (lxc_init(c->name, handler) < 0)
 		goto out;
+	cgroup_ops = handler->cgroup_ops;
 
-	if (!handler->cgroup_ops->payload_create(handler->cgroup_ops, handler)) {
-		ERROR("failed creating groups");
+	if (!cgroup_ops->monitor_create(cgroup_ops, handler)) {
+		ERROR("Failed to create monitor cgroup");
+		goto out_fini_handler;
+	}
+
+	if (!cgroup_ops->monitor_enter(cgroup_ops, handler)) {
+		ERROR("Failed to enter monitor cgroup");
+		goto out_fini_handler;
+	}
+
+	if (!cgroup_ops->monitor_delegate_controllers(cgroup_ops)) {
+		ERROR("Failed to delegate controllers to monitor cgroup");
+		goto out_fini_handler;
+	}
+
+	if (!cgroup_ops->payload_create(cgroup_ops, handler)) {
+		ERROR("Failed creating cgroups");
 		goto out_fini_handler;
 	}