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Date: Thu, 22 Oct 2009 23:49:34 +0200
From: Jens Axboe <jens.axboe@oracle.com>
Subject: Re: [PATCH 5/5] ONLY-APPLY-IF-STILL-FAILING Revert 373c0a7e,
	8aa7e847: Fix congestion_wait() sync/async vs read/write confusion
Message-ID: <20091022214934.GQ10727@kernel.dk>
References: <1256221356-26049-1-git-send-email-mel@csn.ul.ie> <1256221356-26049-6-git-send-email-mel@csn.ul.ie>
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To: Mel Gorman <mel@csn.ul.ie>
Cc: Frans Pop <elendil@planet.nl>, Jiri Kosina <jkosina@suse.cz>, Sven Geggus <lists@fuchsschwanzdomain.de>, Karol Lewandowski <karol.k.lewandowski@gmail.com>, Tobias Oetiker <tobi@oetiker.ch>, "Rafael J. Wysocki" <rjw@sisk.pl>, David Miller <davem@davemloft.net>, Reinette Chatre <reinette.chatre@intel.com>, Kalle Valo <kalle.valo@iki.fi>, David Rientjes <rientjes@google.com>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Mohamed Abbas <mohamed.abbas@intel.com>, "John W. Linville" <linville@tuxdriver.com>, Pekka Enberg <penberg@cs.helsinki.fi>, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>, Greg Kroah-Hartman <gregkh@suse.de>, Stephan von Krawczynski <skraw@ithnet.com>, Kernel Testers List <kernel-testers@vger.kernel.org>, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "linux-mm@kvack.org" <linux-mm@kvack.org>
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On Thu, Oct 22 2009, Mel Gorman wrote:
> Testing by Frans Pop indicates that in the 2.6.30..2.6.31 window at
> least that the commits 373c0a7e 8aa7e847 dramatically increased the
> number of GFP_ATOMIC failures that were occuring within a wireless
> driver. It was never isolated which of the changes was the exact problem
> and it's possible it has been fixed since. If problems are still
> occuring with GFP_ATOMIC in 2.6.31-rc5, then this patch should be
> applied to determine if the congestion_wait() callers are still broken.

I still think this is a complete red herring.

-- 
Jens Axboe

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