linux-kernel - Re: Is: 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: <20160719083216.GA9490@dhcp22.suse.cz>
Date:	Tue, 19 Jul 2016 10:32:17 +0200
From:	Michal Hocko <mhocko@...nel.org>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:	lukasz.odzioba@...el.com, linux-kernel@...r.kernel.org,
	xen-devel@...ts.xensource.com, boris.ostrovsky@...cle.com,
	david.vrabel@...rix.com, stable@...r.kernel.org,
	akpm@...ux-foundation.org, Sasha Levin <sasha.levin@...cle.com>
Subject: Re: Is: 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]

[CCing Sasha]

On Mon 18-07-16 11:30:46, Konrad Rzeszutek Wilk wrote:
> Hey Lukasz,
> 
> 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?

The fix up is trivial so I believe it would be better to apply the
follow up fix
http://lkml.kernel.org/r/20160714175521.3675e3d6@gandalf.local.home
-- 
Michal Hocko
SUSE Labs