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

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Message-ID: <52700AD2.6000703@canonical.com>
Date:	Tue, 29 Oct 2013 15:21:54 -0400
From:	Joseph Salisbury <joseph.salisbury@...onical.com>
To:	"Martin K. Petersen" <martin.petersen@...cle.com>
CC:	hpa@...or.com, bernd.schubert@...m.fraunhofer.de,
	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: Subject:  [v3.8][v3.11][Regression] [SCSI] sd: Update WRITE SAME
 heuristics

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.


Thanks,

Joe

[0] http://pad.lv/1237392
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