From: Shakeel Butt <shakeelb@google.com>
To: Muchun Song <songmuchun@bytedance.com>
Cc: Roman Gushchin <guro@fb.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>,
Xiongchun duan <duanxiongchun@bytedance.com>,
Christian Borntraeger <borntraeger@de.ibm.com>
Subject: Re: [PATCH] mm: memcontrol: fix forget to obtain the ref to objcg in split_page_memcg
Date: Wed, 31 Mar 2021 20:04:48 -0700 [thread overview]
Message-ID: <CALvZod6pg1N4FLEAtjD5=nfBr9vA-3G-BBezbW=PhuOY+d__1g@mail.gmail.com> (raw)
In-Reply-To: <20210401030141.37061-1-songmuchun@bytedance.com>
On Wed, Mar 31, 2021 at 8:02 PM Muchun Song <songmuchun@bytedance.com> wrote:
>
> Christian Borntraeger reported a warning about "percpu ref
> (obj_cgroup_release) <= 0 (-1) after switching to atomic".
> Because we forgot to obtain the reference to the objcg and
> wrongly obtain the reference of memcg.
>
> Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
> Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Looks good to me.
Reviewed-by: Shakeel Butt <shakeelb@google.com>
next prev parent reply other threads:[~2021-04-01 3:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-01 3:01 Muchun Song
2021-04-01 3:04 ` Shakeel Butt [this message]
2021-04-01 3:31 ` Miaohe Lin
2021-04-01 3:35 ` Roman Gushchin
2021-04-01 3:38 ` Miaohe Lin
2021-04-03 1:04 ` Andrew Morton
2021-04-03 1:10 ` Shakeel Butt
2021-04-03 1:12 ` Roman Gushchin
2021-04-12 10:41 ` Christian Borntraeger
2021-04-12 10:53 ` [External] " Muchun Song
2021-04-12 11:05 ` Christian Borntraeger
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='CALvZod6pg1N4FLEAtjD5=nfBr9vA-3G-BBezbW=PhuOY+d__1g@mail.gmail.com' \
--to=shakeelb@google.com \
--cc=akpm@linux-foundation.org \
--cc=borntraeger@de.ibm.com \
--cc=duanxiongchun@bytedance.com \
--cc=guro@fb.com \
--cc=hannes@cmpxchg.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@kernel.org \
--cc=songmuchun@bytedance.com \
--cc=vdavydov.dev@gmail.com \
/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