mptfusion: enable no_write_same for vmware scsi disks
authorChris J Arges <chris.j.arges@canonical.com>
Tue, 23 Sep 2014 14:22:25 +0000 (09:22 -0500)
committerChristoph Hellwig <hch@lst.de>
Thu, 25 Sep 2014 12:24:48 +0000 (14:24 +0200)
commit4089b71cc820a426d601283c92fcd4ffeb5139c2
treeadeb050dc033a2ec53b32b899eca03930377848a
parent859c75aba20264d87dd026bab0d0ca3bff385955
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>
drivers/message/fusion/mptspi.c