From: Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
To: Salman Qazi <sqazi-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Cc: tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH] cgroups: Account for CSS_DEACT_BIAS in __css_put
Date: Fri, 15 Jun 2012 15:20:28 +0800 [thread overview]
Message-ID: <4FDAE23C.2020908@huawei.com> (raw)
In-Reply-To: <20120614215530.12092.3543.stgit-Oz2bD8w/QAX+Wsei8lUk51LMcqb5oVE02SarAXORi/o@public.gmane.org>
On 2012/6/15 5:55, Salman Qazi wrote:
> When we fixed the race between atomic_dec and css_refcnt, we missed
> the fact that css_refcnt internally subtracts CSS_DEACT_BIAS to get
> the actual reference count. This can potentially cause a refcount leak
> if __css_put races with cgroup_clear_css_refs.
>
> Signed-off-by: Salman Qazi <sqazi-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Hope we've got everything right this time!
Acked-by: Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
next prev parent reply other threads:[~2012-06-15 7:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-14 21:55 [PATCH] cgroups: Account for CSS_DEACT_BIAS in __css_put Salman Qazi
[not found] ` <20120614215530.12092.3543.stgit-Oz2bD8w/QAX+Wsei8lUk51LMcqb5oVE02SarAXORi/o@public.gmane.org>
2012-06-15 7:20 ` Li Zefan [this message]
[not found] ` <4FDAE23C.2020908-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2012-06-18 22:39 ` Tejun Heo
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=4FDAE23C.2020908@huawei.com \
--to=lizefan-hv44wf8li93qt0dzr+alfa@public.gmane.org \
--cc=cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=sqazi-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org \
--cc=tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.