linux-kernel - Re: [PATCH 1/5] cgroup: fix broken css_has_online

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Message-ID: <20140617192621.GO31819@htj.dyndns.org>
Date:	Tue, 17 Jun 2014 15:26:21 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Li Zefan <lizefan@...wei.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Cgroups <cgroups@...r.kernel.org>
Subject: Re: [PATCH 1/5] cgroup: fix broken css_has_online_children()

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@...wei.com>

Applied to cgroup/for-3.16-fixes.

Thanks.

-- 
tejun
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