From: Tejun Heo <htejun@gmail.com>
To: Michal Hocko <mhocko@suse.cz>
Cc: Oleg Nesterov <oleg@redhat.com>,
David Rientjes <rientjes@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Konstantin Khlebnikov <khlebnikov@openvz.org>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Rusty Russell <rusty@rustcorp.com.au>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [patch] oom: thaw threads if oom killed thread is frozen before deferring
Date: Fri, 30 Sep 2011 00:46:41 -0700 [thread overview]
Message-ID: <20110930074641.GK10425@mtj.dyndns.org> (raw)
In-Reply-To: <20110930074125.GB32134@tiehlicka.suse.cz>
Hello,
On Fri, Sep 30, 2011 at 09:41:25AM +0200, Michal Hocko wrote:
> > With pending freezer changes, allowing TIF_MEMDIE tasks to exit
> > freezer by modifying freezing() shouldn't be difficult, which should
> > be race-free and much simpler than diddling with thaw_task().
>
> Will the rework help with the initial problem of unkillable OOM selected
> frozen tasks or it will just help with other races that might be present
> with the patch? In other words will this work deprecate the 2 patches
> sent earlier in this thread?
I think it shouldn't be difficult to allow OOM-killing frozen tasks.
That should be good enough, right?
> > How urgent is this? Can we wait for the next merge window?
>
> Yes, I think we can wait some more.
I'm still processing rather large backlog. I'll ping you back once I
sort out the pending freezer changes.
Thanks.
--
tejun
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next prev parent reply other threads:[~2011-09-30 7:46 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-27 8:09 [PATCH 0/2] oom: fix livelock when frozen task is selected Michal Hocko
2011-09-27 6:56 ` [PATCH 1/2] lguest: move process freezing before pending signals check Michal Hocko
2011-10-12 6:55 ` Michal Hocko
2011-10-12 23:57 ` Rusty Russell
2011-10-13 5:48 ` Michal Hocko
2011-09-27 8:01 ` [PATCH 2/2] oom: do not live lock on frozen tasks Michal Hocko
2011-09-27 18:35 ` [patch] oom: thaw threads if oom killed thread is frozen before deferring David Rientjes
2011-09-28 10:44 ` Michal Hocko
2011-09-29 11:51 ` Michal Hocko
2011-09-29 12:05 ` Oleg Nesterov
2011-09-29 13:02 ` Michal Hocko
2011-09-29 16:32 ` Michal Hocko
2011-09-29 16:37 ` Oleg Nesterov
2011-09-29 18:00 ` Michal Hocko
2011-09-30 1:51 ` Tejun Heo
2011-09-30 7:41 ` Michal Hocko
2011-09-30 7:46 ` Tejun Heo [this message]
2011-09-30 8:04 ` Michal Hocko
2011-09-30 15:30 ` Oleg Nesterov
2011-10-28 22:23 ` [PATCH 2/2] oom: do not live lock on frozen tasks Andrew Morton
2011-10-29 9:01 ` Michal Hocko
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