linux-kernel - Re: [PATCH -tip] mm: introduce __GFP

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Message-ID: <20090504161109.GQ4173@lenovo>
Date:	Mon, 4 May 2009 20:11:09 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mel@....ul.ie>,
	LKML <linux-kernel@...r.kernel.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Rik van Riel <riel@...hat.com>,
	David Rientjes <rientjes@...gle.com>,
	Pavel Emelyanov <xemul@...nvz.org>
Subject: Re: [PATCH -tip] mm: introduce __GFP_PANIC modifier

[Christoph Lameter - Mon, May 04, 2009 at 11:54:53AM -0400]
| On Mon, 4 May 2009, Cyrill Gorcunov wrote:
| 
| > You know I only found a message in case if page is already
| > not granted (ie NULL is going to be returned) and right
| > before that we print a warning about that (nopage: label).
| > Which means - no panic here and with (__GFP_NOFAIL | __GFP_REPEAT)
| > just spinning around in attepmt to allocate new memory. And how
| > to behave on atomic allocations. Almost give up... :)
| 
| Could you check for __GFP_FAIL|__GFP_REPEAT somewheres and panic? Not sure
| if __GFP_REPEAT is the right second flag to use.
| 

OK, I thought about various mods combinations too. Will recheck
if there a way more precise. Thanks!

	-- Cyrill
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