From patchwork Fri May 29 20:29:19 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: KY Srinivasan X-Patchwork-Id: 6510821 Return-Path: X-Original-To: patchwork-linux-scsi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id AE8D0C0020 for ; Fri, 29 May 2015 19:08:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DE852207EE for ; Fri, 29 May 2015 19:08:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E525C207E9 for ; Fri, 29 May 2015 19:08:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757154AbbE2TIw (ORCPT ); Fri, 29 May 2015 15:08:52 -0400 Received: from p3plsmtps2ded04.prod.phx3.secureserver.net ([208.109.80.198]:49667 "EHLO p3plsmtps2ded04.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756846AbbE2TIV (ORCPT ); Fri, 29 May 2015 15:08:21 -0400 Received: from linuxonhyperv.com ([72.167.245.219]) by p3plsmtps2ded04.prod.phx3.secureserver.net with : DED : id Zv8M1q00y4kklxU01v8Mts; Fri, 29 May 2015 12:08:21 -0700 x-originating-ip: 72.167.245.219 Received: by linuxonhyperv.com (Postfix, from userid 507) id 0981D22B8002; Fri, 29 May 2015 13:29:21 -0700 (PDT) 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@microsoft.com" , "K. Y. Srinivasan" Subject: [PATCH 6/6] scsi: storvsc: Allow write_same when host is windows 10 Date: Fri, 29 May 2015 13:29:19 -0700 Message-Id: <1432931359-14473-6-git-send-email-kys@microsoft.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1432931359-14473-1-git-send-email-kys@microsoft.com> References: <1432931336-14434-1-git-send-email-kys@microsoft.com> <1432931359-14473-1-git-send-email-kys@microsoft.com> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: keith.mange@microsoft.com Allow WRITE_SAME for Windows10 and above hosts. Tested-by: Alex Ng Signed-off-by: Keith Mange Signed-off-by: K. Y. Srinivasan Reviewed-by: Long Li --- 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;