linux-kernel - Re: [patch 08/11 -mmotm] oom: invoke oom killer for __GFP

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Date:	Mon, 11 May 2009 08:59:28 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	kosaki.motohiro@...fujitsu.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Nick Piggin <npiggin@...e.de>, Mel Gorman <mel@....ul.ie>,
	Peter Ziljstra <a.p.ziljstra@...llo.nl>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	San Mehat <san@...roid.com>, Arve Hjonnevag <arve@...roid.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 08/11 -mmotm] oom: invoke oom killer for __GFP_NOFAIL

> The oom killer must be invoked regardless of the order if the allocation
> is __GFP_NOFAIL, otherwise it will loop forever when reclaim fails to
> free some memory.

This is intensional behavior. plus you change very widely caller bahavior.
if you don't have good test program, I nak this.


> 
> Cc: Mel Gorman <mel@....ul.ie>
> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Cc: Nick Piggin <npiggin@...e.de>
> Cc: Christoph Lameter <cl@...ux-foundation.org>
> Cc: Dave Hansen <dave@...ux.vnet.ibm.com>
> Signed-off-by: David Rientjes <rientjes@...gle.com>


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