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Johannes Weiner authored
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>
d6ccc55e