On 2013/9/7 3:31, Tejun Heo wrote:
> bd8815a6d8 ("cgroup: make css_for_each_descendant() and friends
> include the origin css in the iteration") updated cgroup descendant
> iterators to include the origin css; unfortuantely, it forgot to drop
> special case handling in css_next_descendant_post() for empty subtree
> leading to failure to visit the origin css without any child.
>
> Fix it by dropping the special case handling and always returning the
> leftmost descendant on the first iteration.
>
> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Acked-by: Li Zefan <lizefan@xxxxxxxxxx>
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