linux-kernel - Re: 2.6.39-rc4+: Kernel leaking memory during FS scanning, regression?

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Message-ID: <4DB86BA4.8070401@draigBrady.com>
Date:	Wed, 27 Apr 2011 20:16:52 +0100
From:	Pádraig Brady <P@...igBrady.com>
To:	Bruno Prémont <bonbons@...ux-vserver.org>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	paulmck@...ux.vnet.ibm.com, Mike Frysinger <vapier.adi@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org,
	"Paul E. McKenney" <paul.mckenney@...aro.org>,
	Pekka Enberg <penberg@...nel.org>
Subject: Re: 2.6.39-rc4+: Kernel leaking memory during FS scanning, regression?

On 27/04/11 19:41, Bruno Prémont wrote:
> On Wed, 27 April 2011 Bruno Prémont wrote:
>> On Wed, 27 Apr 2011 00:28:37 +0200 (CEST) Thomas Gleixner wrote:
>>> On Tue, 26 Apr 2011, Linus Torvalds wrote:
>>>> On Tue, Apr 26, 2011 at 10:09 AM, Bruno Prémont wrote:
>>>>>
>>>>> Just in case, /proc/$(pidof rcu_kthread)/status shows ~20k voluntary
>>>>> context switches and exactly one non-voluntary one.
>>>>>
>>>>> In addition when rcu_kthread has stopped doing its work
>>>>> `swapoff $(swapdevice)` seems to block forever (at least normal shutdown
>>>>> blocks on disabling swap device).
> 
> Apparently it's not swapoff but `umount -a -t tmpfs` that's getting
> stuck here. Manual swapoff worked.

Anything to do with this?
http://thread.gmane.org/gmane.linux.kernel.mm/60953/

cheers,
Pádraig.
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