linux-kernel - Re: [PATCH] Revert "mm: remove __GFP_NO

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Message-ID: <50AF9450.9020803@leemhuis.info>
Date:	Fri, 23 Nov 2012 16:20:48 +0100
From:	Thorsten Leemhuis <fedora@...mhuis.info>
To:	Josh Boyer <jwboyer@...il.com>
CC:	Mel Gorman <mgorman@...e.de>, Zdenek Kabelac <zkabelac@...hat.com>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Jiri Slaby <jslaby@...e.cz>, Valdis.Kletnieks@...edu,
	Jiri Slaby <jirislaby@...il.com>, linux-mm@...ck.org,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Robert Jennings <rcj@...ux.vnet.ibm.com>, bruno@...ff.to
Subject: Re: [PATCH] Revert "mm: remove __GFP_NO_KSWAPD"

Thorsten Leemhuis wrote on 20.11.2012 18:43:
> On 20.11.2012 16:38, Josh Boyer wrote:
> 
> The short story from my current point of view is:

Quick update, in case anybody is interested:

>  * my main machine at home where I initially saw the issue that started
> this thread seems to be running fine with rc6 and the "safe" patch Mel
> posted in https://lkml.org/lkml/2012/11/12/113 Before that I ran a rc5
> kernel with the revert that went into rc6 and the "safe" patch -- that
> worked fine for a few days, too.

On this machine I'm running a rc6 kernel + the fix for the accounting
bug(¹) that went into mainline ~40 hours ago + the "riskier" patch Mel
posted in https://lkml.org/lkml/2012/11/12/151

Up to now everything works fine.

(¹) https://lkml.org/lkml/2012/11/21/362

>  * I have a second machine where I started to use 3.7-rc kernels only
> yesterday (the machine triggered a bug in the radeon driver that seems
> to be fixed in rc6) which showed symptoms like the ones Zdenek Kabelac
> mentions in this thread. I wasn't able to look closer at it, but simply
> tried rc6 with the safe patch, which didn't help. I'm now running rc6
> with the "riskier" patch from https://lkml.org/lkml/2012/11/12/151
> I can't yet tell if it helps. If the problems shows up again I'll try to
> capture more debugging data via sysrq -- there wasn't any time for that
> when I was running rc6 with the safe patch, sorry.

This machine is now also behaving fine with above mentioned rc6 kernel +
the two patches. It seems the accounting bug was the root cause for the
problems this machine showed.

CU
 Thorsten
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