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List: linux-aio
Subject: Re: [RESEND v2 PATCH 0/2] Bug fix in aio ring page migration
From: Gu Zheng <guz.fnst () cn ! fujitsu ! com>
Date: 2014-05-14 1:13:15
Message-ID: 5372C32B.8050906 () cn ! fujitsu ! com
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Hi Greg,
Thanks for your attention on this thread.
On 05/14/2014 07:58 AM, Greg Kroah-Hartman wrote:
> On Thu, Mar 13, 2014 at 05:45:42PM +0800, Gu Zheng wrote:
> > This patchset has been applied to linux-next, and these problems also exist
> > in 3.12.y and 3.13.y stable tree.
> > So please merge this patchset to 3.12.y and 3.13.y stable tree.
> >
> > commit 692c9b8c5ee8d263bb8348171f0bebd3d84eb2c1
> > Author: Tang Chen <tangchen@cn.fujitsu.com>
> > Date: Mon Mar 10 16:15:33 2014 +0800
> >
> > aio, memory-hotplug: Fix confliction when migrating and accessing ring pages.
> >
> > commit e0f5e0add36d2e3c456cf2f4283673ed834b3c24
> > Author: Tang Chen <tangchen@cn.fujitsu.com>
> > Date: Mon Mar 10 16:15:34 2014 +0800
> >
> > aio, mem-hotplug: Add memory barrier to aio ring page migration.
> >
> > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/fs/aio.c?id=692c9b8c5ee8d263bb8348171f0bebd3d84eb2c1
> > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/fs/aio.c?id=e0f5e0add36d2e3c456cf2f4283673ed834b3c24
> >
> > https://lkml.org/lkml/2014/3/10/56
> > https://lkml.org/lkml/2014/3/10/58
>
> I don't see these in Linus's tree, what happened?
These two patches were replaced by the better one from Benjamin, and it has been
merged into upstream.
commit fa8a53c39f3fdde98c9eace6a9b412143f0f6ed6
Author: Benjamin LaHaise <bcrl@kvack.org>
Date: Fri Mar 28 10:14:45 2014 -0400
aio: v4 ensure access to ctx->ring_pages is correctly serialised for migration
And I have already received the notify that it has been applied into stable tree.
Best regards,
Gu
>
> thanks,
>
> greg k-h
>
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