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

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Message-ID: <20140116093220.GC28157@dhcp22.suse.cz>
Date:	Thu, 16 Jan 2014 10:32:20 +0100
From:	Michal Hocko <mhocko@...e.cz>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Johannes Weiner <hannes@...xchg.org>,
	Andrew Morton <akpm@...ux-foundation.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 Wed 15-01-14 13:23:10, David Rientjes wrote:
> On Wed, 15 Jan 2014, Michal Hocko wrote:
[...]
> > Which depends on yours only to revert your part. I plan to repost it but
> > that still doesn't mean it will get merged because Johannes still has
> > some argumnets against. I would like to start the discussion again
> > because now we are so deep in circles that it is hard to come up with a
> > reasonable outcome. It is still hard to e.g. agree on an actual fix
> > for a real problem https://lkml.org/lkml/2013/12/12/129.
> > 
> 
> This is concerning because it's merged in -mm without being tested by Eric 
> and is marked for stable while violating the stable kernel rules criteria.

Are you questioning the patch fixes the described issue?

Please note that the exit_robust_list and PF_EXITING as a culprit has
been identified by Eric. Of course I would prefer if it was tested by
anybody who can reproduce it.
-- 
Michal Hocko
SUSE Labs
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