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

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Date:	Thu, 28 Apr 2011 11:17:48 +0200
From:	Sedat Dilek <sedat.dilek@...glemail.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Bruno Prémont <bonbons@...ux-vserver.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Mike Frysinger <vapier.adi@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	LKML <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>,
	Mike Galbraith <efault@....de>
Subject: Re: 2.6.39-rc4+: Kernel leaking memory during FS scanning, regression?

On Thu, Apr 28, 2011 at 11:09 AM, Thomas Gleixner <tglx@...utronix.de> wrote:
> Bruno,
>
> On Thu, 28 Apr 2011, Thomas Gleixner wrote:
>> On Wed, 27 Apr 2011, Bruno Prémont 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,
>
>        tglx
>
> ---
>  kernel/sched.c |    3 ---
>  1 file changed, 3 deletions(-)
>
> Index: linux-2.6/kernel/sched.c
> ===================================================================
> --- 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
>  {
>        s64 delta;
>
> -       if (rq->skip_clock_update)
> -               return;
> -
>        delta = sched_clock_cpu(cpu_of(rq)) - rq->clock;
>        rq->clock += delta;
>        update_rq_clock_task(rq, delta);

Referring to [1]?

- Sedat -

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