From: Michal Hocko <mhocko@kernel.org>
To: Roman Gushchin <guro@fb.com>
Cc: linux-mm@kvack.org, Vladimir Davydov <vdavydov.dev@gmail.com>,
Johannes Weiner <hannes@cmpxchg.org>, Tejun Heo <tj@kernel.org>,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
kernel-team@fb.com, cgroups@vger.kernel.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [v3 5/6] mm, oom: don't mark all oom victims tasks with TIF_MEMDIE
Date: Fri, 30 Jun 2017 10:25:51 +0200 [thread overview]
Message-ID: <20170630082551.GB22917@dhcp22.suse.cz> (raw)
In-Reply-To: <20170629184513.GA27714@castle>
On Thu 29-06-17 14:45:13, Roman Gushchin wrote:
> On Thu, Jun 29, 2017 at 10:53:57AM +0200, Michal Hocko wrote:
> > On Wed 21-06-17 22:19:15, Roman Gushchin wrote:
> > > We want to limit the number of tasks which are having an access
> > > to the memory reserves. To ensure the progress it's enough
> > > to have one such process at the time.
> > >
> > > If we need to kill the whole cgroup, let's give an access to the
> > > memory reserves only to the first process in the list, which is
> > > (usually) the biggest process.
> > > This will give us good chances that all other processes will be able
> > > to quit without an access to the memory reserves.
> >
> > I don't like this to be honest. Is there any reason to go the reduced
> > memory reserves access to oom victims I was suggesting earlier [1]?
> >
> > [1] http://lkml.kernel.org/r/http://lkml.kernel.org/r/1472723464-22866-2-git-send-email-mhocko@kernel.org
>
> I've nothing against your approach. What's the state of this patchset?
> Do you plan to bring it upstream?
Just the specific patch I have linked should be sufficient for what you
need here. The patchset had some issues which I didn't have time to fix
and as such the need for the above patch was not a high priority as
well.
--
Michal Hocko
SUSE Labs
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2017-06-30 8:25 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-21 21:19 [v3 0/6] cgroup-aware OOM killer Roman Gushchin
2017-06-21 21:19 ` [v3 1/6] mm, oom: use oom_victims counter to synchronize oom victim selection Roman Gushchin
[not found] ` <201706220040.v5M0eSnK074332@www262.sakura.ne.jp>
2017-06-22 16:58 ` Roman Gushchin
2017-06-22 20:37 ` Tetsuo Handa
[not found] ` <201706230537.IDB21366.SQHJVFOOFOMFLt-JPay3/Yim36HaxMnTkn67Xf5DAMn2ifp@public.gmane.org>
2017-06-22 21:52 ` Tetsuo Handa
2017-06-29 18:47 ` Roman Gushchin
2017-06-29 20:13 ` Tetsuo Handa
2017-06-29 9:04 ` Michal Hocko
2017-06-21 21:19 ` [v3 2/6] mm, oom: cgroup-aware OOM killer Roman Gushchin
2017-07-10 23:05 ` David Rientjes
2017-07-11 12:51 ` Roman Gushchin
2017-07-11 20:56 ` David Rientjes
2017-07-12 12:11 ` Roman Gushchin
2017-07-12 20:26 ` David Rientjes
2017-06-21 21:19 ` [v3 3/6] mm, oom: cgroup-aware OOM killer debug info Roman Gushchin
2017-06-21 21:19 ` [v3 4/6] mm, oom: introduce oom_score_adj for memory cgroups Roman Gushchin
2017-06-21 21:19 ` [v3 5/6] mm, oom: don't mark all oom victims tasks with TIF_MEMDIE Roman Gushchin
2017-06-29 8:53 ` Michal Hocko
2017-06-29 18:45 ` Roman Gushchin
2017-06-30 8:25 ` Michal Hocko [this message]
2017-06-21 21:19 ` [v3 6/6] mm,oom,docs: describe the cgroup-aware OOM killer Roman Gushchin
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=20170630082551.GB22917@dhcp22.suse.cz \
--to=mhocko@kernel.org \
--cc=cgroups@vger.kernel.org \
--cc=guro@fb.com \
--cc=hannes@cmpxchg.org \
--cc=kernel-team@fb.com \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=penguin-kernel@I-love.SAKURA.ne.jp \
--cc=tj@kernel.org \
--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;
as well as URLs for NNTP newsgroup(s).