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From: Michal Hocko <mhocko@kernel.org>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: guro@fb.com, rientjes@google.com, hannes@cmpxchg.org,
	vdavydov.dev@gmail.com, tj@kernel.org, linux-mm@kvack.org,
	akpm@linux-foundation.org, torvalds@linux-foundation.org
Subject: Re: [PATCH] mm,oom: Don't call schedule_timeout_killable() with oom_lock held.
Date: Mon, 28 May 2018 14:43:13 +0200	[thread overview]
Message-ID: <20180528124313.GC27180@dhcp22.suse.cz> (raw)
In-Reply-To: <201805252046.JFF30222.JHSFOFQFMtVOLO@I-love.SAKURA.ne.jp>

On Fri 25-05-18 20:46:21, Tetsuo Handa wrote:
> Michal Hocko wrote:
> > On Fri 25-05-18 19:57:32, Tetsuo Handa wrote:
> > > Michal Hocko wrote:
> > > > What is wrong with the folliwing? should_reclaim_retry should be a
> > > > natural reschedule point. PF_WQ_WORKER is a special case which needs a
> > > > stronger rescheduling policy. Doing that unconditionally seems more
> > > > straightforward than depending on a zone being a good candidate for a
> > > > further reclaim.
> > > 
> > > Where is schedule_timeout_uninterruptible(1) for !PF_KTHREAD threads?
> > 
> > Re-read what I've said.
> 
> Please show me as a complete patch. Then, I will test your patch.

So how about we start as simple as the following? If we _really_ need to
touch should_reclaim_retry then it should be done in a separate patch
with some numbers/tracing data backing that story.
---

  reply	other threads:[~2018-05-28 15:54 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-12 14:18 [PATCH] mm,oom: Don't call schedule_timeout_killable() with oom_lock held Tetsuo Handa
2018-05-15  9:16 ` Michal Hocko
2018-05-18 10:14   ` Tetsuo Handa
2018-05-18 12:20     ` Michal Hocko
2018-05-20 15:56       ` Tetsuo Handa
2018-05-22  6:18         ` Michal Hocko
2018-05-23 10:24           ` Tetsuo Handa
2018-05-23 11:57             ` Michal Hocko
2018-05-23 13:45               ` Tetsuo Handa
2018-05-23 14:56                 ` Michal Hocko
2018-05-24 10:51                   ` Tetsuo Handa
2018-05-24 11:50                     ` Michal Hocko
2018-05-25  1:17                       ` Tetsuo Handa
2018-05-25  8:31                         ` Michal Hocko
2018-05-25 10:57                           ` Tetsuo Handa
2018-05-25 11:42                             ` Michal Hocko
2018-05-25 11:46                               ` Tetsuo Handa
2018-05-28 12:43                                 ` Michal Hocko [this message]
2018-05-28 20:57                                   ` Tetsuo Handa
2018-05-29  7:17                                     ` Michal Hocko
2018-05-29 23:07                                       ` Andrew Morton
2018-05-31 10:10                                         ` Tetsuo Handa
2018-05-31 10:44                                           ` Michal Hocko
2018-05-31 15:23                                             ` Tetsuo Handa
2018-05-31 18:47                                               ` Michal Hocko
2018-06-01  1:21                                                 ` Tetsuo Handa
2018-06-01  8:04                                                   ` Michal Hocko
2018-06-01 15:28                                         ` Michal Hocko
2018-06-01 21:11                                           ` Andrew Morton
2018-06-04  7:04                                             ` Michal Hocko
2018-06-04 10:41                                               ` Tetsuo Handa
2018-06-04 11:22                                                 ` Michal Hocko
2018-06-04 11:30                                                   ` Tetsuo Handa
2018-06-06  9:02                                                 ` David Rientjes
2018-06-06 13:37                                                   ` Tetsuo Handa
2018-06-06 18:44                                                     ` David Rientjes
2018-05-29  7:17             ` Michal Hocko
2018-05-29  8:16               ` Michal Hocko
2018-05-29 14:33                 ` Tetsuo Handa
2018-05-29 17:18                   ` Michal Hocko
2018-05-29 17:28                     ` Michal Hocko
2018-05-31 16:31                 ` [PATCH] mm, memcg, oom: fix pre-mature allocation failures kbuild test robot
  -- strict thread matches above, loose matches on Subject: below --
2018-03-22 10:51 [PATCH] mm,oom: Don't call schedule_timeout_killable() with oom_lock held Tetsuo Handa
2018-03-22 11:45 ` Michal Hocko
2018-03-22 13:16   ` Tetsuo Handa
2018-01-22 13:46 Tetsuo Handa
2018-01-23  8:38 ` Michal Hocko
2018-01-23 12:07   ` Tetsuo Handa
2018-01-23 12:42     ` Michal Hocko
2018-01-24 13:28       ` Tetsuo Handa
2018-02-13 11:58         ` Tetsuo Handa

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