linux-kernel - Re: Subject: [v3.8][v3.11][Regression] [SCSI] sd: Update WRITE SAME heuristics

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Message-ID: <5270108E.5040401@itwm.fraunhofer.de>
Date:	Tue, 29 Oct 2013 20:46:22 +0100
From:	Bernd Schubert <bernd.schubert@...m.fraunhofer.de>
To:	Joseph Salisbury <joseph.salisbury@...onical.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>
CC:	hpa@...or.com, JBottomley@...allels.com,
	LKML <linux-kernel@...r.kernel.org>,
	Kamal Mostafa <kamal.mostafa@...onical.com>,
	linux-scsi@...r.kernel.org,
	Luis Henriques <luis.henriques@...onical.com>
Subject: Re: Subject:  [v3.8][v3.11][Regression] [SCSI] sd: Update WRITE SAME
 heuristics

Hello Joseph,

On 10/29/2013 08:21 PM, Joseph Salisbury wrote:
> Hi Martin,
>
> A bug was opened against the Ubuntu kernel[0].  After a kernel bisect,
> it was found that reverting the following commit resolved this bug:
>
> commit 66c28f97120e8a621afd5aa7a31c4b85c547d33d
> Author: Martin K. Petersen <martin.petersen@...cle.com>
> Date:   Thu Jun 6 22:15:55 2013 -0400
>
>      [SCSI] sd: Update WRITE SAME heuristics
>
>
> The regression was introduced as of v3.11-rc1, but it also made it's way
> into the stable trees.
>
> I see that you are the author of this patch, so I wanted to run this by
> you.  I was thinking of requesting a revert for v3.12, but I wanted to
> get your feedback first.
>

James queued this up for 3.13

> http://git.kernel.org/cgit/linux/kernel/git/jejb/scsi.git/commit/?id=735e39e680256a13e7be3492acfb4d9721287a42

Maybe we should try to convince James to take it into 3.12?


Cheers,
Bernd
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