>From 9a489728dbae48311e2ee0fff3c1793dd1e97392 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 26 Nov 2015 13:29:21 +0100 Subject: [PATCH] cgroup: Export cgroup_is_descendant() CFQ IO scheduler will use cgroup_is_descendant() to decide whether one queue can preempt another once. Signed-off-by: Jan Kara --- kernel/cgroup.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/cgroup.c b/kernel/cgroup.c index f1603c153890..6b61f847b040 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -477,6 +477,7 @@ bool cgroup_is_descendant(struct cgroup *cgrp, struct cgroup *ancestor) } return false; } +EXPORT_SYMBOL_GPL(cgroup_is_descendant); static int notify_on_release(const struct cgroup *cgrp) { -- 2.1.4