Re: [PATCH 09/12] cgroup: make sure parent won't be destroyed beforeits children

[Tejun Heo]

On Mon, Apr 08, 2013 at 02:35:02PM +0800, Li Zefan wrote:
> Suppose we rmdir a cgroup and there're still css refs, this cgroup won't
> be freed. Then we rmdir the parent cgroup, and the parent is freed
> immediately due to css ref draining to 0. Now it would be a disaster if
> the still-alive child cgroup tries to access its parent.
> 
> Make sure this won't happen.
> 
> Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx>
> Reviewed-by: Michal Hocko <mhocko@xxxxxxx>
> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>

Thanks.

-- 
tejun
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