linux-kernel - Re: Bug with "fix partial page writes" [3.2-rc regression]

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Date:	Fri, 9 Dec 2011 21:44:46 +0800
From:	Yongqiang Yang <xiaoqiangnk@...il.com>
To:	Andy Whitcroft <apw@...onical.com>
Cc:	Hugh Dickins <hughd@...gle.com>,
	Allison Henderson <achender@...ux.vnet.ibm.com>,
	"Ted Ts'o" <tytso@....edu>, Curt Wohlgemuth <curtw@...gle.com>,
	Surbhi Palande <csurbhi@...il.com>,
	Rafael Wysocki <rjw@...k.pl>, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: Bug with "fix partial page writes" [3.2-rc regression]

On Fri, Dec 9, 2011 at 9:33 PM, Andy Whitcroft <apw@...onical.com> wrote:
> On Thu, Dec 08, 2011 at 06:12:35PM +0000, Andy Whitcroft wrote:
>> On Thu, Dec 08, 2011 at 09:39:55AM -0800, Hugh Dickins wrote:
>>
>> [...]
>> > > [PATCH 1/2] ext4: let mpage_submit_io works well when blocksize < pagesize
>> > > [PATCH 2/2] ext4: let ext4_discard_partial_buffers handle pages without
>> > >
>> > > [PATCH 1/2] ext4: remove a wrong BUG_ON in ext4_ext_convert_to_initialized
>> > > [PATCH 2/2] ext4: let ext4_bio_write_page handle EOF correctly
>> [...]
>> > Only once, before the fixes, did I ever see an unexplained EINVAL
>> > (from cp), like Andy reports: I'm very hopeful his case is fixed too.
>>
>> Yes I have reverted my fix and applied all four of these patches (above).
>> I have just completed a 100 iteration run of my test case without failure.
>> This would typically fail in the first iteration 90% of the time and
>> never survived more than two iterations.
>>
>> I am comfortable saying they resolve my issue.
>
> Are we likely to see these fixes in a 3.2-rcN or will they be going to
> stable?
All patches will go to 3.2-rcN and the later 2 patches would go to
stable too, I think.

Yongqiang.
>
> -apw



-- 
Best Wishes
Yongqiang Yang
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