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

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Message-ID: <20131128031610.GL3556@cmpxchg.org>
Date:	Wed, 27 Nov 2013 22:16:10 -0500
From:	Johannes Weiner <hannes@...xchg.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Michal Hocko <mhocko@...e.cz>,
	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
Subject: Re: [patch 1/2] mm, memcg: avoid oom notification when current needs
 access to memory reserves

On Wed, Nov 27, 2013 at 06:52:10PM -0800, David Rientjes wrote:
> On Wed, 27 Nov 2013, Johannes Weiner wrote:
> 
> > The long-standing, user-visible definition of the current line agrees
> > with me.  You can't just redefine this, period.
> > 
> > I tried to explain to you how insane the motivation for this patch is,
> > but it does not look like you are reading what I write.  But you don't
> > get to change user-visible behavior just like that anyway, much less
> > so without a sane reason, so this was a complete waste of time :-(
> > 
> 
> If you would like to leave this to Andrew's decision, that's fine.  
> Michal has already agreed with my patch and has acked it in -mm.
> 
> If userspace is going to handle oom conditions, which is possible today 
> and will be extended in the future, then it should only wakeup as a last 
> resort when there is no possibility of future memory freeing.

I'll ack a patch that accomplishes that.
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