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Date: Mon, 4 May 2009 20:11:09 +0400
From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Christoph Lameter <cl@linux.com>
Cc: Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@linux-foundation.org>,
       Mel Gorman <mel@csn.ul.ie>, LKML <linux-kernel@vger.kernel.org>,
       Pekka Enberg <penberg@cs.helsinki.fi>, Rik van Riel <riel@redhat.com>,
       David Rientjes <rientjes@google.com>,
       Pavel Emelyanov <xemul@openvz.org>
Subject: Re: [PATCH -tip] mm: introduce __GFP_PANIC modifier
Message-ID: <20090504161109.GQ4173@lenovo>
References: <20090504122740.GH4173@lenovo> <20090504131311.GA23330@elte.hu> <20090504131638.GJ4173@lenovo> <alpine.DEB.1.10.0905040940490.9553@qirst.com> <20090504141256.GK4173@lenovo> <alpine.DEB.1.10.0905041011200.17937@qirst.com> <20090504142903.GM4173@lenovo> <20090504152026.GO4173@lenovo> <alpine.DEB.1.10.0905041148490.10044@qirst.com>
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[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