From: Keith Mange <keith.ma...@microsoft.com>
Allow WRITE_SAME for Windows10 and above hosts.
Tested-by: Alex Ng <ale...@microsoft.com>
Signed-off-by: Keith Mange <keith.ma...@microsoft.com>
Signed-off-by: K. Y. Srinivasan <k...@microsoft.com>
---
drivers/scsi/storvsc_drv.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 58fa47a..021cbdf 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1488,7 +1488,8 @@ static int storvsc_device_configure(struct scsi_device
*sdevice)
/*
* If the host is WIN8 or WIN8 R2, claim conformance to SPC-3
- * if the device is a MSFT virtual device.
+ * if the device is a MSFT virtual device. If the host is
+ * WIN10 or newer, allow write_same.
*/
if (!strncmp(sdevice->vendor, "Msft", 4)) {
switch (vmstor_proto_version) {
@@ -1497,6 +1498,9 @@ static int storvsc_device_configure(struct scsi_device
*sdevice)
sdevice->scsi_level = SCSI_SPC_3;
break;
}
+
+ if (vmstor_proto_version >= VMSTOR_PROTO_VERSION_WIN10)
+ sdevice->no_write_same = 0;
}
return 0;
--
1.7.4.1
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