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Date: Tue, 17 Jun 2014 15:26:21 -0400
From: Tejun Heo <tj@kernel.org>
To: Li Zefan <lizefan@huawei.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Cgroups <cgroups@vger.kernel.org>
Subject: Re: [PATCH 1/5] cgroup: fix broken css_has_online_children()
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References: <53994943.60703@huawei.com>
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On Thu, Jun 12, 2014 at 02:31:31PM +0800, Li Zefan wrote:
> After running:
> 
>   # mount -t cgroup cpu xxx /cgroup && mkdir /cgroup/sub && \
>     rmdir /cgroup/sub && umount /cgroup
> 
> I found the cgroup root still existed:
> 
>   # cat /proc/cgroups
>   #subsys_name    hierarchy       num_cgroups     enabled
>   cpuset  0       1       1
>   cpu     1       1       1
>   ...
> 
> It turned out css_has_online_children() is broken.
> 
> Signed-off-by: Li Zefan <lizefan@huawei.com>

Applied to cgroup/for-3.16-fixes.

Thanks.

-- 
tejun

From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH 1/5] cgroup: fix broken css_has_online_children()
Date: Tue, 17 Jun 2014 15:26:21 -0400
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To: Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
Cc: LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Cgroups <cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>

On Thu, Jun 12, 2014 at 02:31:31PM +0800, Li Zefan wrote:
> After running:
> 
>   # mount -t cgroup cpu xxx /cgroup && mkdir /cgroup/sub && \
>     rmdir /cgroup/sub && umount /cgroup
> 
> I found the cgroup root still existed:
> 
>   # cat /proc/cgroups
>   #subsys_name    hierarchy       num_cgroups     enabled
>   cpuset  0       1       1
>   cpu     1       1       1
>   ...
> 
> It turned out css_has_online_children() is broken.
> 
> Signed-off-by: Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>

Applied to cgroup/for-3.16-fixes.

Thanks.

-- 
tejun