linux-kernel - Re: Revert c5ad33184354260be6d05de57e46a5498692f6d6 "mm/swap.c: flush lru pvecs on compound page arrival" from stable tree? Was:[osstest-admin@...project.org: [Xen-devel] [linux-4.1 bisection] complete test-amd64-i386-qemut-rhel6hvm-amd]

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Message-ID: <73189037-1a4e-915a-7120-112f2afe3342@dd-wrt.com>
Date:	Mon, 18 Jul 2016 18:53:01 +0200
From:	Sebastian Gottschall <s.gottschall@...wrt.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	"Odzioba, Lukasz" <lukasz.odzioba@...el.com>,
	ian.jackson@...rix.com
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"boris.ostrovsky@...cle.com" <boris.ostrovsky@...cle.com>,
	"david.vrabel@...rix.com" <david.vrabel@...rix.com>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
Subject: Re: Revert c5ad33184354260be6d05de57e46a5498692f6d6 "mm/swap.c: flush
 lru pvecs on compound page arrival" from stable tree?
 Was:[osstest-admin@...project.org: [Xen-devel] [linux-4.1 bisection] complete
 test-amd64-i386-qemut-rhel6hvm-amd]

i have the same issue without xen. for me network traffic causes oom 
within seconds to 3 minutes on embedded systems.
but i dont know if this is the cause. i just can say that it was 
introduced with 3.18.37


  Am 18.07.2016 um 18:18 schrieb Konrad Rzeszutek Wilk:
> On Mon, Jul 18, 2016 at 03:48:03PM +0000, Odzioba, Lukasz wrote:
>> On Monday, July 18, 2016 5:31 PM, Konrad Rzeszutek Wilk wrote:
>>> We found that your patch in the automated Xen test-case ends up
>>> OOMing the box when trying to install guests. This worked prior
>>> to your patch.
>>>
>>> See serial log:
>>> http://logs.test-lab.xenproject.org/osstest/logs/97597/test-amd64-i386-qemut-rhel6hvm-amd/serial-pinot0.log
>>>
>>> Would it be OK to revert this patch from the stable trees?
>> I think it is ok to revert that, but the source of a problem may be somewhere else.
>> Is it the only problem with this patch, you see?
> I believe so.
>
>> By stable trees do you mean just 4.1 or all stable trees?
> We have only tested 3.18 and 4.1. It may be that other stable trees
> are affected.
>> Thanks,
>> Lukas
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