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SubjectRe: [PATCH 2/6] memcg: root_cgroup cannot reach mem_cgroup_move_parent
On Wed, Oct 17, 2012 at 03:30:44PM +0200, Michal Hocko wrote:
> The root cgroup cannot be destroyed so we never hit it idown the
> mem_cgroup_pre_destroy path and mem_cgroup_force_empty_write shouldn't
> even try to do anything if called for the root.
>
> This means that mem_cgroup_move_parent doesn't have to bother with the
> root cgroup and it can assume it can always move charges upwards.
>
> Signed-off-by: Michal Hocko <mhocko@suse.cz>

Reviewed-by: Tejun Heo <tj@kernel.org>

Thanks.

--
tejun


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