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-rw-r--r--kernel/cgroup.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index e0aeb32..8075b72 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -3187,11 +3187,9 @@ css_next_descendant_post(struct cgroup_subsys_state *pos,
WARN_ON_ONCE(!rcu_read_lock_held());
- /* if first iteration, visit the leftmost descendant */
- if (!pos) {
- next = css_leftmost_descendant(root);
- return next != root ? next : NULL;
- }
+ /* if first iteration, visit leftmost descendant which may be @root */
+ if (!pos)
+ return css_leftmost_descendant(root);
/* if we visited @root, we're done */
if (pos == root)
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