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From: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
To: Jens Axboe <jaxboe@fusionio.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>,
	"vgoyal@redhat.com" <vgoyal@redhat.com>,
	"jmarchan@redhat.com" <jmarchan@redhat.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] Don't merge different partition's IOs
Date: Wed, 08 Dec 2010 17:11:16 +0900	[thread overview]
Message-ID: <4CFF3DA4.5060705@jp.fujitsu.com> (raw)
In-Reply-To: <4CFF3C86.2070504@fusionio.com>

Hi Jens,

(2010/12/08 17:06), Jens Axboe wrote:
>>>> I hit on another approach. Although it doesn'tprevent any merge as Linus
>>>> preferred, it can fix the problem anyway. In this idea, in_flight is
>>>> incremented and decremented for the partition which the request belonged
>>>> to in its creation. It has the following merits.
>>
>> Revert is already finished. 2.6.37-rc-5 and latest stable kernel doesn't
>> contain Yasuaki's former logic.
>>
>> https://lkml.org/lkml/2010/10/24/118
>
> Yes I know, that is why I said:
>
>>> I really would prefer if we fixed up the patchset we ended up reverting.
>>> At least that had a purpose with growing struct request, since we saved
>>> on doing the partition lookups.
>
> That I prefer we fix that code up, since I think it's the best solution
> to the problem.
>

I already postedit.

https://lkml.org/lkml/2010/12/8/12

I think it is OK without mail subject :-)

Thanks,
Satoru


  reply	other threads:[~2010-12-08  8:12 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-06  9:44 [PATCH 1/2] Don't merge different partition's IOs Yasuaki Ishimatsu
2010-12-06 16:08 ` Linus Torvalds
2010-12-07  7:18   ` Satoru Takeuchi
2010-12-07 18:39     ` Vivek Goyal
2010-12-08  7:33     ` Jens Axboe
2010-12-08  7:59       ` Satoru Takeuchi
2010-12-08  8:06         ` Jens Axboe
2010-12-08  8:11           ` Satoru Takeuchi [this message]
2010-12-08 14:46             ` Jens Axboe
2010-12-08 15:51               ` Vivek Goyal
2010-12-08 15:58                 ` Vivek Goyal
2010-12-10 11:22                   ` Jerome Marchand
2010-12-10 16:12               ` Jerome Marchand
2010-12-10 16:55                 ` Vivek Goyal
2010-12-14 20:25                   ` Jens Axboe
2010-12-17 13:42                     ` [PATCH] block: fix accounting bug on cross partition merges Jerome Marchand
2010-12-17 19:06                       ` Jens Axboe
2010-12-17 22:32                         ` Vivek Goyal
2010-12-23 15:10                         ` Jerome Marchand
2010-12-23 15:39                           ` Vivek Goyal
2010-12-23 17:04                             ` Jerome Marchand
2010-12-24 19:29                               ` Vivek Goyal
2011-01-04 15:52                                 ` [PATCH 1/2] kref: add kref_test_and_get Jerome Marchand
2011-01-04 15:55                                   ` [PATCH 2/2] block: fix accounting bug on cross partition merges Jerome Marchand
2011-01-04 21:00                                     ` Greg KH
2011-01-05 13:51                                       ` Jerome Marchand
2011-01-05 16:00                                         ` Greg KH
2011-01-05 16:19                                           ` Jerome Marchand
2011-01-05 16:27                                             ` Greg KH
2011-01-05 13:55                                       ` Jens Axboe
2011-01-05 15:58                                         ` Greg KH
2011-01-05 18:46                                           ` Jens Axboe
2011-01-05 20:08                                             ` Greg KH
2011-01-05 21:38                                               ` Jens Axboe
2011-01-05 22:16                                                 ` Greg KH
2011-01-06  9:46                                                   ` Jens Axboe
2011-01-05 14:00                                     ` Jens Axboe
2011-01-05 14:09                                       ` Jerome Marchand
2011-01-05 14:17                                         ` Jens Axboe
2011-01-04 16:05                                   ` [PATCH 1/2] kref: add kref_test_and_get Eric Dumazet
2011-01-05 15:02                                     ` [PATCH 1/2 v2] " Jerome Marchand
2011-01-05 15:43                                       ` Alexey Dobriyan
2011-01-05 15:57                                         ` Greg KH
2011-01-05 15:56                                       ` Greg KH
2011-01-04 20:57                                   ` [PATCH 1/2] " Greg KH
2011-01-05 13:35                                     ` Jerome Marchand
2011-01-05 15:55                                       ` Greg KH

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