linux-kernel - Re: [patch 1/2] mm, memcg: avoid oom notification when current needs access to memory reserves

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Message-ID: <20140110083025.GE9437@dhcp22.suse.cz>
Date:	Fri, 10 Jan 2014 09:30:25 +0100
From:	Michal Hocko <mhocko@...e.cz>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	cgroups@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [patch 1/2] mm, memcg: avoid oom notification when current needs
 access to memory reserves

On Thu 09-01-14 16:01:15, David Rientjes wrote:
> On Thu, 9 Jan 2014, Andrew Morton wrote:
> 
> > > I'm not sure why this was dropped since it's vitally needed for any sane 
> > > userspace oom handler to be effective.
> > 
> > It was dropped because the other memcg developers disagreed with it.
> > 
> 
> It was acked-by Michal.

I have already explained why I have acked it. I will not repeat
it here again. I have also proposed an alternative solution
(https://lkml.org/lkml/2013/12/12/174) which IMO is more viable because
it handles both user/kernel memcg OOM consistently. This patch still has
to be discussed because of other Johannes concerns. I plan to repost it
in a near future.

-- 
Michal Hocko
SUSE Labs
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