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

From: Li Zefan
Date: Wed Feb 12 2014 - 04:27:41 EST


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!

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

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

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