mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Tejun Heo <tj@kernel.org>
To: Li Zefan <lizefan@huawei.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	David Miller <davem@davemloft.net>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Containers <containers@lists.linux-foundation.org>,
	cgroups@vger.kernel.org
Subject: Re: [GIT PULL] cgroup changes for v3.15-rc1
Date: Fri, 4 Apr 2014 08:22:59 -0400	[thread overview]
Message-ID: <20140404122259.GB5461@mtj.dyndns.org> (raw)
In-Reply-To: <533E7801.8090604@huawei.com>

On Fri, Apr 04, 2014 at 05:14:41PM +0800, Li Zefan wrote:
> [PATCH] cgroup: fix top cgroup refcnt leak
> 
> As mount() and kill_sb() is not a one-to-one match, If we mount the same
> cgroupfs in serveral mount points, and then umount all of them, kill_sb()
> will be called only once.
> 
> Try:
>         # mount -t cgroup -o cpuacct xxx /cgroup
>         # mount -t cgroup -o cpuacct xxx /cgroup2
>         # cat /proc/cgroups | grep cpuacct
>         cpuacct 2       1       1
>         # umount /cgroup
>         # umount /cgroup2
>         # cat /proc/cgroups | grep cpuacct
>         cpuacct 2       1       1
> 
> You'll see cgroupfs will never be freed.
> 
> Signed-off-by: Li Zefan <lizefan@huawei.com>

Applied to cgroup/for-3.15-fixes.

Thanks.

-- 
tejun

  reply	other threads:[~2014-04-04 12:23 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-03 16:49 Tejun Heo
2014-04-03 18:11 ` Linus Torvalds
2014-04-03 18:24   ` Linus Torvalds
     [not found]     ` <CAOS58YMckmoCocguf9BC_Wxbn3D2Rx3MArhgozO9qCj4g=5aDw@mail.gmail.com>
2014-04-03 19:01       ` Linus Torvalds
2014-04-03 19:43         ` Tejun Heo
2014-04-03 20:02           ` Linus Torvalds
2014-04-04 12:03             ` Tejun Heo
2014-04-03 23:18           ` Eric W. Biederman
2014-04-04  9:14           ` Li Zefan
2014-04-04 12:22             ` Tejun Heo [this message]
2014-04-05  1:06 ` Linus Torvalds
2014-04-05  1:11   ` Linus Torvalds
2014-04-05  1:34     ` Linus Torvalds
2014-04-07 20:59       ` [PATCH cgroup/for-3.15-fixes] cgroup: newly created dirs and files should be owned by the creator Tejun Heo
2014-04-06 14:31     ` [GIT PULL] cgroup changes for v3.15-rc1 Markus Trippelsdorf

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20140404122259.GB5461@mtj.dyndns.org \
    --to=tj@kernel.org \
    --cc=cgroups@vger.kernel.org \
    --cc=containers@lists.linux-foundation.org \
    --cc=davem@davemloft.net \
    --cc=ebiederm@xmission.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=lizefan@huawei.com \
    --cc=torvalds@linux-foundation.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®