linux-kernel - Re: [PATCH RESEND 0/3] memory_hotplug: hyperv: fix deadlock between memory adding and onlining

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Message-ID: <20150312161810.GA18269@dhcp22.suse.cz>
Date:	Thu, 12 Mar 2015 12:18:10 -0400
From:	Michal Hocko <mhocko@...e.cz>
To:	Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>,
	Tang Chen <tangchen@...fujitsu.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	David Rientjes <rientjes@...gle.com>,
	Fabian Frederick <fabf@...net.be>,
	Zhang Zhen <zhenzhang.zhang@...wei.com>,
	Vladimir Davydov <vdavydov@...allels.com>,
	Wang Nan <wangnan0@...wei.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	devel@...uxdriverproject.org, linux-mm@...ck.org
Subject: Re: [PATCH RESEND 0/3] memory_hotplug: hyperv: fix deadlock between
 memory adding and onlining

On Mon 09-03-15 09:40:43, Vitaly Kuznetsov wrote:
> Michal Hocko <mhocko@...e.cz> writes:
> 
> > [Sorry for the late response]
> >
> > This is basically the same code posted by KY Srinivasan posted late last
> > year (http://marc.info/?l=linux-mm&m=141782228129426&w=2). I had
> > objections to the implementation
> > http://marc.info/?l=linux-mm&m=141805109216700&w=2
> 
> Np, David's alternative fix is already in -mm:
> 
> https://lkml.org/lkml/2015/2/12/655

Thanks for the pointer. I have missed this one. This is definitely a
better approach than cluttering around exporting device lock.
-- 
Michal Hocko
SUSE Labs
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