From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753042AbbHMOSO (ORCPT ); Thu, 13 Aug 2015 10:18:14 -0400 Received: from p3plsmtps2ded03.prod.phx3.secureserver.net ([208.109.80.60]:54177 "EHLO p3plsmtps2ded03.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752841AbbHMOSF (ORCPT ); Thu, 13 Aug 2015 10:18:05 -0400 x-originating-ip: 72.167.245.219 From: "K. Y. Srinivasan" To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, ohering@suse.com, jbottomley@parallels.com, hch@infradead.org, linux-scsi@vger.kernel.org, apw@canonical.com, vkuznets@redhat.com, jasowang@redhat.com Cc: Keith Mange , "K. Y. Srinivasan" Subject: [PATCH RESEND V2 6/7] scsi: storvsc: Allow write_same when host is windows 10 Date: Thu, 13 Aug 2015 08:43:51 -0700 Message-Id: <1439480632-11144-6-git-send-email-kys@microsoft.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1439480632-11144-1-git-send-email-kys@microsoft.com> References: <1439480609-11099-1-git-send-email-kys@microsoft.com> <1439480632-11144-1-git-send-email-kys@microsoft.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Keith Mange Allow WRITE_SAME for Windows10 and above hosts. Tested-by: Alex Ng Signed-off-by: Keith Mange Signed-off-by: K. Y. Srinivasan --- 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