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    SubjectRe: [PATCH 12/12] cgroup: implement dynamic subtree controller enable/disable on the default hierarchy
    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.

    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?

    --
    tejun


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