linux-kernel - Re: FYI: mmap

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Message-Id: <20100713091333.EA3E.A69D9226@jp.fujitsu.com>
Date:	Tue, 13 Jul 2010 09:14:17 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	kosaki.motohiro@...fujitsu.com,
	Peter Zijlstra <peterz@...radead.org>,
	Michel Lespinasse <walken@...gle.com>,
	linux-mm <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Divyesh Shah <dpshah@...gle.com>, Ingo Molnar <mingo@...e.hu>
Subject: Re: FYI: mmap_sem OOM patch

> On Thu, 8 Jul 2010, KOSAKI Motohiro wrote:
> 
> > I disagree. __GFP_NOFAIL mean this allocation failure can makes really
> > dangerous result. Instead, OOM-Killer should try to kill next process.
> > I think.
> > 
> 
> That's not what happens, __alloc_pages_high_priority() will loop forever 
> for __GFP_NOFAIL, the oom killer is never recalled.

Yup, please reread the discusstion.

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