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Commit b95f5be0 authored by Keith Mange's avatar Keith Mange Committed by James Bottomley
Browse files

storvsc: Allow write_same when host is windows 10 



Allow WRITE_SAME for Windows10 and above hosts.

Tested-by: default avatarAlex Ng <alexng@microsoft.com>
Signed-off-by: default avatarKeith Mange <keith.mange@microsoft.com>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Odin.com>
parent e6c4bc66

drivers/scsi/storvsc_drv.c

+5 −1
Original line number Original line Diff line number Diff line
@@ -1480,7 +1480,8 @@ static int storvsc_device_configure(struct scsi_device *sdevice) 




	/*

	/*

	 * If the host is WIN8 or WIN8 R2, claim conformance to SPC-3

	 * If the 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)) {

	if (!strncmp(sdevice->vendor, "Msft", 4)) {

		switch (vmstor_proto_version) {

		switch (vmstor_proto_version) {
@@ -1489,6 +1490,9 @@ static int storvsc_device_configure(struct scsi_device *sdevice) 
			sdevice->scsi_level = SCSI_SPC_3;

			sdevice->scsi_level = SCSI_SPC_3;

			break;

			break;

		}

		}



		if (vmstor_proto_version >= VMSTOR_PROTO_VERSION_WIN10)

			sdevice->no_write_same = 0;

	}

	}





	return 0;

	return 0;