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

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Message-ID: <4EE23967.9080404@linux.vnet.ibm.com>
Date:	Fri, 09 Dec 2011 09:37:59 -0700
From:	Allison Henderson <achender@...ux.vnet.ibm.com>
To:	Yongqiang Yang <xiaoqiangnk@...il.com>
CC:	Andy Whitcroft <apw@...onical.com>,
	Hugh Dickins <hughd@...gle.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 12/09/2011 06:44 AM, Yongqiang Yang wrote:
> 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.

Sounds good, its lasted 24hrs now for me so I think it's safe to stop 
it.  Thx!

Allison Henderson

>>
>> -apw
>
>
>

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