tree 07dddac3f4c19e16865f5c7cf2a306407ca96564
parent 8c8a5502183c724854afd2f143a72f7eb71b6fea
author Johannes Weiner <hannes@cmpxchg.org> 1466180667 -0400
committer Tejun Heo <tj@kernel.org> 1466187392 -0400

cgroup: remove unnecessary 0 check from css_from_id()

css_idr allocation starts at 1, so index 0 will never point to an
item. css_from_id() currently filters that before asking idr_find(),
but idr_find() would also just return NULL, so this is not needed.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Tejun Heo <tj@kernel.org>