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SubjectRe: [PATCH 3/8] cgroup: use cgroup_lock_live_group(parent) in cgroup_create()
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Hey, Michal.

On Thu, Nov 1, 2012 at 2:16 AM, Michal Hocko <mhocko@suse.cz> wrote:
> I am not sure I understand. What does deactivate_super has to do with
> the above suggestion? cgroup_lock_live_group will take the cgroup_mutex
> on the success or frees the previously allocated&unused memory. The
> only thing I was suggesting is to do cgroup_lock_live_group first and
> allocate the cgroup only if it doesn't fail.

It complicates updates to the error exit path. You end up having to
update a lot more and it's not like grabbing lock first is
substantially better in any way, so why bother?

Thanks.

--
tejun


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