linux-kernel - Re: [RFC] [PATCH] Cgroup based OOM killer controller

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Message-ID: <20090127093105.GB2646@ioremap.net>
Date:	Tue, 27 Jan 2009 12:31:05 +0300
From:	Evgeniy Polyakov <zbr@...emap.net>
To:	David Rientjes <rientjes@...gle.com>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>, balbir@...ux.vnet.ibm.com,
	Nikanth Karthikesan <knikanth@...e.de>,
	containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org,
	Torvalds <torvalds@...ux-foundation.org>,
	Arve Hj?nnev?g <arve@...roid.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Chris Snook <csnook@...hat.com>,
	Paul Menage <menage@...gle.com>
Subject: Re: [RFC] [PATCH] Cgroup based OOM killer controller

On Mon, Jan 26, 2009 at 11:51:27PM -0800, David Rientjes (rientjes@...gle.com) wrote:
> Yeah, I proposed /dev/mem_notify being made as a client of cgroups there 
> in http://marc.info/?l=linux-kernel&m=123200623628685
> 
> How do you replace the oom killer's capability of giving a killed task 
> access to memory reserves with TIF_MEMDIE in userspace?

/dev/mem_notify is a great idea, but please do not limit existing
oom-killer in its ability to do the job and do not rely on application's
ability to send a SIGKILL which will not kill tasks in unkillable state
contrary to oom-killer.

-- 
	Evgeniy Polyakov
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