Re: [PATCH] cgroup: protect modifications to cgroup_idr with cgroup_mutex

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On Wed 12-02-14 17:26:40, Li Zefan wrote:
> On 2014/2/12 17:12, Michal Hocko wrote:
> > Li has pointed out that my previous backport was not correct because
> > err_unlock label releases a reference to supperblock which was not taken
> > before idr_alloc. I've also removed cgroup_mutex from free_css_id as per
> > Li.
> > Fixed in this version.
> > 
> 
> Looks good to me!

Thanks for double checking.

> Are you going to send it to stable mailing list after the fix hits mainline
> or use it internally?

I plan to have it tested internally and then send it later on when
stable FAILED to apply mail arrives. Unless you want to send it yourself
of course.

> It has small conflicts with this patch that will also be backported to 3.12:
> 
> https://git.kernel.org/cgit/linux/kernel/git/tj/cgroup.git/commit/kernel/cgroup.c?h=for-3.14-fixes&id=b58c89986a77a23658682a100eb15d8edb571ebb

Thanks for the heads up. Should be trivial to resolve.
-- 
Michal Hocko
SUSE Labs
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