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SubjectRe: [PATCH 12/12] cgroup: implement dynamic subtree controller enable/disable on the default hierarchy
On 04/19/2014 02:11 AM, Tejun Heo wrote:
> Hello,
>
> On Thu, Apr 17, 2014 at 11:33:50PM +0530, Raghavendra KT wrote:
>> On Tue, Apr 15, 2014 at 3:07 AM, Tejun Heo <tj@kernel.org> wrote:
>> I undertsand that with the above parsing we could do
>> echo "-blkio +blkio" > cgroup.subtree_control and honor last enable/disable.
>
> Yeah, and the behavior is described in the following document.
>

Hello Tejun, Thanks for the kind reply. The document has helped me a
lot while reviewing,testing the unified hierarchy code.

> http://lkml.kernel.org/g/20140416145248.GD1257@htj.dyndns.org
>
>> It confused me while testing. do you think we should return -EINVAL in
>> such case?
>
> Hmmm... I think whatever comes later wins is a pretty clear and easy
> rule, no?

Very much correct. and if there is a feeling to check multiple entry
later I would happy to update the code.



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