From: Chris J Arges <chris.j.arges@canonical.com>
Date: Tue, 23 Sep 2014 14:22:25 +0000 (-0500)
Subject: mptfusion: enable no_write_same for vmware scsi disks
X-Git-Tag: fixes-for-v3.18-merge-window~25^2^2~78
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4089b71cc820a426d601283c92fcd4ffeb5139c2;p=pandora-kernel.git

mptfusion: enable no_write_same for vmware scsi disks

When using a virtual SCSI disk in a VMWare VM if blkdev_issue_zeroout is used
data can be improperly zeroed out using the mptfusion driver. This patch
disables write_same for this driver and the vmware subsystem_vendor which
ensures that manual zeroing out is used instead.

Cc: stable@vger.kernel.org
BugLink: http://bugs.launchpad.net/bugs/1371591
Reported-by: Bruce Lucas <bruce.lucas@mongodb.com>
Tested-by: Chris J Arges <chris.j.arges@canonical.com>
Signed-off-by: Chris J Arges <chris.j.arges@canonical.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---

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