From: Chris J Arges <chris.j.arges@canonical.com>
To: linux-scsi@vget.kernel.org
Cc: bruce.lucas@mongodb.com,
Chris J Arges <chris.j.arges@canonical.com>,
Nagalakshmi Nandigama <nagalakshmi.nandigama@avagotech.com>,
Praveen Krishnamoorthy <praveen.krishnamoorthy@avagotech.com>,
Sreekanth Reddy <sreekanth.reddy@avagotech.com>,
Abhijit Mahajan <abhijit.mahajan@avagotech.com>,
MPT-FusionLinux.pdl@avagotech.com, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] mptfusion: enable no_write_same in scsi_host_template
Date: Mon, 22 Sep 2014 12:56:59 -0500 [thread overview]
Message-ID: <1411408690-4766-1-git-send-email-chris.j.arges@canonical.com> (raw)
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 which ensures that manual zeroing out
is used instead.
BugLink: http://bugs.launchpad.net/bugs/1371591
Reported-by: Bruce Lucas <bruce.lucas@mongodb.com>
Signed-off-by: Chris J Arges <chris.j.arges@canonical.com>
---
drivers/message/fusion/mptspi.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index 787933d..2fcc9bd 100644
--- a/drivers/message/fusion/mptspi.c
+++ b/drivers/message/fusion/mptspi.c
@@ -850,6 +850,7 @@ static struct scsi_host_template mptspi_driver_template = {
.cmd_per_lun = 7,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = mptscsih_host_attrs,
+ .no_write_same = 1,
};
static int mptspi_write_spi_device_pg1(struct scsi_target *starget,
--
1.9.1
next reply other threads:[~2014-09-22 18:00 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-22 17:56 Chris J Arges [this message]
2014-09-22 18:02 ` [PATCH] mptfusion: enable no_write_same in scsi_host_template Christoph Hellwig
2014-09-22 18:17 ` Chris J Arges
2014-09-22 18:19 ` Christoph Hellwig
2014-09-22 18:50 ` Chris J Arges
2014-09-22 20:44 ` [PATCH v2] mptfusion: enable no_write_same for vmware scsi disks Chris J Arges
2014-09-22 20:54 ` Chris J Arges
2014-09-23 7:11 ` Christoph Hellwig
2014-09-23 14:22 ` [PATCH v3] " Chris J Arges
2014-09-23 15:29 ` Chris J Arges
2014-09-23 22:11 ` Chris J Arges
2014-09-23 23:28 ` Martin K. Petersen
2014-09-24 8:18 ` Christoph Hellwig
2014-09-24 15:11 ` Martin K. Petersen
2014-09-25 17:01 ` Christoph Hellwig
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