linux-kernel - Re: [patch -mm 8/9 v2] oom: avoid oom killer for lowmem allocations

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Message-Id: <20100217084858.fd72ec4f.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Wed, 17 Feb 2010 08:48:58 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Nick Piggin <npiggin@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Lubos Lunak <l.lunak@...e.cz>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [patch -mm 8/9 v2] oom: avoid oom killer for lowmem allocations

On Tue, 16 Feb 2010 00:25:22 -0800 (PST)
David Rientjes <rientjes@...gle.com> wrote:

> On Tue, 16 Feb 2010, Nick Piggin wrote:
> 
> > > I'll add this check to __alloc_pages_may_oom() for the !(gfp_mask & 
> > > __GFP_NOFAIL) path since we're all content with endlessly looping.
> > 
> > Thanks. Yes endlessly looping is far preferable to randomly oopsing
> > or corrupting memory.
> > 
> 
> Here's the new patch for your consideration.
> 

Then, can we take kdump in this endlessly looping situaton ?

panic_on_oom=always + kdump can do that. 

Thanks,
-Kame

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