From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sedat Dilek <sedat.dilek@googlemail.com>
Subject: Re: 2.6.39-rc4+: Kernel leaking memory during FS scanning, regression?
Date: Thu, 28 Apr 2011 11:17:48 +0200
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Cc: =?UTF-8?Q?Bruno_Pr=C3=A9mont?= <bonbons@linux-vserver.org>,
	Linus Torvalds <torvalds@linux-foundation.org>, Ingo Molnar <mingo@elte.hu>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Mike Frysinger <vapier.adi@gmail.com>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	LKML <linux-kernel@vger.kernel.org>, linux-mm@kvack.org,
	linux-fsdevel@vger.kernel.org, "Paul E. McKenney" <paul.mckenney@linaro.org>,
	Pekka Enberg <penberg@kernel.org>, Mike Galbraith <efault@gmx.de>
To: Thomas Gleixner <tglx@linutronix.de>
Return-path: <owner-linux-mm@kvack.org>
In-Reply-To: <alpine.LFD.2.02.1104281051090.19095@ionos>
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List-Id: linux-fsdevel.vger.kernel.org

On Thu, Apr 28, 2011 at 11:09 AM, Thomas Gleixner <tglx@linutronix.de> wrot=
e:
> Bruno,
>
> On Thu, 28 Apr 2011, Thomas Gleixner wrote:
>> On Wed, 27 Apr 2011, Bruno Pr=C3=A9mont wrote:
>> I need some sleep now, but I will try to come up with sensible
>> debugging tomorrow unless Paul or someone else beats me to it.
>
> can you please add the patch below and provide the /proc/sched_debug
> output when the problem shows up again?
>
> Thanks,
>
> =C2=A0 =C2=A0 =C2=A0 =C2=A0tglx
>
> ---
> =C2=A0kernel/sched.c | =C2=A0 =C2=A03 ---
> =C2=A01 file changed, 3 deletions(-)
>
> Index: linux-2.6/kernel/sched.c
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> --- linux-2.6.orig/kernel/sched.c
> +++ linux-2.6/kernel/sched.c
> @@ -642,9 +642,6 @@ static void update_rq_clock(struct rq *r
> =C2=A0{
> =C2=A0 =C2=A0 =C2=A0 =C2=A0s64 delta;
>
> - =C2=A0 =C2=A0 =C2=A0 if (rq->skip_clock_update)
> - =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 return;
> -
> =C2=A0 =C2=A0 =C2=A0 =C2=A0delta =3D sched_clock_cpu(cpu_of(rq)) - rq->cl=
ock;
> =C2=A0 =C2=A0 =C2=A0 =C2=A0rq->clock +=3D delta;
> =C2=A0 =C2=A0 =C2=A0 =C2=A0update_rq_clock_task(rq, delta);

Referring to [1]?

- Sedat -

[1] http://lkml.org/lkml/2011/4/22/35

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