linux-kernel - Re: [PATCH 0/3] splice fixes

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Message-ID: <4C35D4CE.6020401@kernel.dk>
Date:	Thu, 08 Jul 2010 15:38:22 +0200
From:	Jens Axboe <axboe@...nel.dk>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Miklos Szeredi <miklos@...redi.hu>, xiaosuo@...il.com,
	tim.gardner@...onical.com, torvalds@...ux-foundation.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	stable@...nel.org
Subject: Re: [PATCH 0/3] splice fixes

On 2010-07-08 15:36, Jens Axboe wrote:
> On 2010-07-07 22:38, Andrew Morton wrote:
>> On Tue, 29 Jun 2010 14:05:52 +0200
>> Jens Axboe <axboe@...nel.dk> wrote:
>>
>>> On 2010-06-29 14:05, Miklos Szeredi wrote:
>>>> On Tue, 29 Jun 2010, Jens Axboe wrote:
>>>>> On 2010-06-29 13:08, Miklos Szeredi wrote:
>>>>>> These patches fix bugs that affect real-world users of splice(2) and
>>>>>> sendfile(2) interfaces.
>>>>>>
>>>>>> Not sure if some or all of them are appropriate for 2.6.35 and/or
>>>>>> -stable?
>>>>>
>>>>> I think that 1-2 should go into 2.6.35 directly, and 3 for .36 with
>>>>> a stable backport as well. Agree?
>>>>
>>>> Yes, sounds good.
>>>
>>> Good, that is what I queued up. I haven't pushed out the updated
>>> for-linus yet, since I asked Linus to pull it this morning.
>>>
>>
>> According to Tim's report on lkml
>> (http://lkml.org/lkml/2010/6/25/280),
>> cc56f7de7f00d188c7c4da1e9861581853b9e92f caused a regression. 
>> cc56f7de7f00d188c7c4da1e9861581853b9e92f is present in 2.6.33 and in
>> 2.6.34 hence the fix should be backported into -stable.
>>
>> According to http://bugs.launchpad.net/bugs/588861, the patch "splice:
>> direct_splice_actor() should not use pos in sd" fixes the regression.
>>
>> However this:
>>
>> commit 4f9078afb4e083e033aafbbfabe729cb3832aa42
>> Author: Changli Gao <xiaosuo@...il.com>
>> Date:   Tue Jun 29 13:09:18 2010 +0200
>>
>>     splice: direct_splice_actor() should not use pos in sd
>>
>> went into mainline without a cc:stable tag.
> 
> I will send an email to stable@.

BTW, it's not in mainline yet. I know I forgot to mark it as stable,
but I can't tell them to include it before it's in mainline.


-- 
Jens Axboe


-- 
Jens Axboe

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