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

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Message-ID: <20140115143449.GN8782@dhcp22.suse.cz>
Date:	Wed, 15 Jan 2014 15:34:49 +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 Sun 12-01-14 14:10:49, David Rientjes wrote:
> On Fri, 10 Jan 2014, Johannes Weiner wrote:
> 
> > > > > It was acked-by Michal.
> > 
> > Michal acked it before we had most of the discussions and now he is
> > proposing an alternate version of yours, a patch that you are even
> > discussing with him concurrently in another thread.  To claim he is
> > still backing your patch because of that initial ack is disingenuous.
> > 
> 
> His patch depends on mine, Johannes.

Does it? Are we talking about the same patch here?
https://lkml.org/lkml/2013/12/12/174

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.

While notification might be an issue as well it is more of a corner case
than a regular one. So let's try to move on, agree on the "oom vs.
PF_EXITING) first and lay out discussion for the notification in a new
threa. Shall we?
-- 
Michal Hocko
SUSE Labs
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