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

[Tejun Heo]

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 at 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