Re: [PATCH v1 3/3] cgroup: relax common ancestor restriction for direct descendants

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Hello, James.

On Thu, Jul 21, 2016 at 08:34:36AM -0700, James Bottomley wrote:
> So if I as the cgroup ns owner am moving a task from A to A_subdir, the
> admin scanning tasks in all of A may miss this task in motion because
> all the tasks files can't be scanned atomically?

So, the admin just wants to move processes from A and only A to B.  It
doesn't wanna interfere with processes in the subdirs or on-going ns
operations, but if the race occurs, both A -> B migration and ns
subdir operation would succeed and the end result would be something
neither expects.

Thanks.

-- 
tejun
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