Re: [PATCH] mm,oom: Bring OOM notifier callbacks to outside of OOM killer.

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To: Michal Hocko <mhocko@xxxxxxxxxx>
Subject: Re: [PATCH] mm,oom: Bring OOM notifier callbacks to outside of OOM killer.
From: "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>
Date: Wed, 27 Jun 2018 07:31:25 -0700
Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>, David Rientjes <rientjes@xxxxxxxxxx>, linux-mm@xxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20180627072207.GB32348@dhcp22.suse.cz>
References: <1529493638-6389-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp> <alpine.DEB.2.21.1806201528490.16984@chino.kir.corp.google.com> <20180621073142.GA10465@dhcp22.suse.cz> <2d8c3056-1bc2-9a32-d745-ab328fd587a1@i-love.sakura.ne.jp> <20180626170345.GA3593@linux.vnet.ibm.com> <20180627072207.GB32348@dhcp22.suse.cz>
Reply-to: paulmck@xxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.5.21 (2010-09-15)

On Wed, Jun 27, 2018 at 09:22:07AM +0200, Michal Hocko wrote:
> On Tue 26-06-18 10:03:45, Paul E. McKenney wrote:
> [...]
> > 3.	Something else?
> 
> How hard it would be to use a different API than oom notifiers? E.g. a
> shrinker which just kicks all the pending callbacks if the reclaim
> priority reaches low values (e.g. 0)?

Beats me.  What is a shrinker?  ;-)

More seriously, could you please point me at an exemplary shrinker
use case so I can see what is involved?

							Thanx, Paul

Follow-Ups:
- Re: [PATCH] mm,oom: Bring OOM notifier callbacks to outside of OOM killer.
  - From: Michal Hocko

References:
- [PATCH] mm,oom: Bring OOM notifier callbacks to outside of OOM killer.
  - From: Tetsuo Handa
- Re: [PATCH] mm,oom: Bring OOM notifier callbacks to outside of OOM killer.
  - From: David Rientjes
- Re: [PATCH] mm,oom: Bring OOM notifier callbacks to outside of OOM killer.
  - From: Michal Hocko
- Re: [PATCH] mm,oom: Bring OOM notifier callbacks to outside of OOM killer.
  - From: Tetsuo Handa
- Re: [PATCH] mm,oom: Bring OOM notifier callbacks to outside of OOM killer.
  - From: Paul E. McKenney
- Re: [PATCH] mm,oom: Bring OOM notifier callbacks to outside of OOM killer.
  - From: Michal Hocko

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