CFQ IO scheduler will use cgroup_is_descendant() to decide whether one
queue can preempt another once.
Signed-off-by: Jan Kara <j...@suse.cz>
---
kernel/cgroup.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 470f6536b9e8..c4d74c10dfcb 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -483,6 +483,7 @@ 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)
{
--
2.6.2
--
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