From: Oleg Nesterov <oleg@redhat.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
rientjes@google.com, linux-mm@kvack.org
Subject: Re: [PATCH v3] mm,oom: speed up select_bad_process() loop.
Date: Sat, 21 May 2016 00:04:33 +0200 [thread overview]
Message-ID: <20160520220432.GA22324@redhat.com> (raw)
In-Reply-To: <20160520064244.GD19172@dhcp22.suse.cz>
On 05/20, Michal Hocko wrote:
>
> On Fri 20-05-16 03:50:01, Oleg Nesterov wrote:
> > On 05/19, Michal Hocko wrote:
> > >
> > > Long term I
> > > would like to to move this logic into the mm_struct, it would be just
> > > larger surgery I guess.
> >
> > Why we can't do this right now? Just another MMF_ flag set only once and
> > never cleared.
>
> It is more complicated and so more error prone.
Sure, but don't we want this anyway in the long term?
> We have to sort out
> shortcuts which get TIF_MEMDIE without killing first.
Yes, but this seems a bit "off-topic" to me... but probably I do not understand
the problem enough.
> And we have that
> nasty "mm shared between independant processes" case there.
Yes, yes, please see another email.
> If you feel that this step is not really worth it
No, no. Unless I see something which looks "obviously wrong" to me, I won't argue
with this (or any other) change as long as you and Tetsuo agree on it.
I understand that it is veru easy to blame OOM-killer (and the changes in this
area), but it is not easy to fix this code ;)
Oleg.
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next prev parent reply other threads:[~2016-05-20 22:04 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-18 12:20 [PATCH v2] mm,oom: speed up select_bad_process() loop Tetsuo Handa
2016-05-18 12:51 ` Michal Hocko
2016-05-18 13:30 ` [PATCH v3] " Tetsuo Handa
2016-05-18 14:15 ` Michal Hocko
2016-05-18 21:09 ` Andrew Morton
2016-05-19 6:53 ` Michal Hocko
2016-05-19 7:17 ` Michal Hocko
2016-05-19 8:17 ` Michal Hocko
2016-05-20 1:50 ` Oleg Nesterov
2016-05-20 2:13 ` Oleg Nesterov
2016-05-20 6:42 ` Michal Hocko
2016-05-20 22:04 ` Oleg Nesterov [this message]
2016-05-18 14:44 ` Tetsuo Handa
2016-05-20 7:50 ` Michal Hocko
2016-05-20 11:51 ` Tetsuo Handa
2016-05-20 12:09 ` Michal Hocko
2016-05-20 13:41 ` Tetsuo Handa
2016-05-20 13:44 ` Tetsuo Handa
2016-05-20 15:23 ` Michal Hocko
2016-05-20 15:56 ` Tetsuo Handa
2016-05-23 7:55 ` Michal Hocko
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