Re: [PATCH REPOST RFC cgroup/for-3.7] cgroup: mark subsystems withbroken hierarchy support and whine if cgroups are nested for them

From: Li Zefan
Date: Thu Sep 13 2012 - 02:49:09 EST

On 2012/9/13 0:34, Tejun Heo wrote:
> Hello,
> On Wed, Sep 12, 2012 at 01:37:28PM +0400, Glauber Costa wrote:
>> "If a cpuset is cpu or mem exclusive, no other cpuset, other than
>> a direct ancestor or descendant, may share any of the same CPUs or
>> Memory Nodes."
>> So I think it tricked me as well. I was under the impression that
>> "exclusive" would also disallow the kids.
> You two are confusing me even more. AFAICS, the hierarchical
> properties don't seem to change whether exclusive is set or not. It
> still ensures children can't have something parent doesn't allow and
> exclusive applies to whether to share something with siblings, so I
> don't think anything is broken hierarchy-wise. Am I missing
> something? If so, please be explicit and elaborate where and how it's
> broken.

Ignore it. I misunderstood the exclusive flag. Sorry for the noise.

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