On Fri, Jun 17, 2016 at 12:24:27PM -0400, Johannes Weiner wrote:

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>

Applied 1-2 to cgroup/for-4.8.

Thanks.

-- 
tejun

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