From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4B7F4C43387 for ; Thu, 3 Jan 2019 09:55:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED597206BB for ; Thu, 3 Jan 2019 09:55:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="TlW4gjHe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730645AbfACJze (ORCPT ); Thu, 3 Jan 2019 04:55:34 -0500 Received: from mail-pl1-f196.google.com ([209.85.214.196]:33498 "EHLO mail-pl1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728395AbfACJze (ORCPT ); Thu, 3 Jan 2019 04:55:34 -0500 Received: by mail-pl1-f196.google.com with SMTP id z23so15715411plo.0; Thu, 03 Jan 2019 01:55:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=HvksfxDJztssxsSA8yomJBjdYl2oiH6i1OWje0NSK68=; b=TlW4gjHeMuV3Xar39RktjehRoFI0sO5b8YbKzdCHifSOQY9+Qjxqj2JRt1ROVE1Ef6 PSNybifYw38VqIEgoyTxWj6yTM1nw2q8/1oNB2GRzCTjJd+T9hbHVjFgkWLn5o5smR4d NUHCwXfdPYuuOTgBU90/FXRZGMglL7aR+yG/hRSEbKXZOLQAoTxZCPz4xhseDrPba8su DLfk8hT+AKzuMV/DtYtqjulSu6c25o5UnxZUAL2cSAkypppPAPsH49VmrQVf7YG8ioQw NXOKah633mUIo9r4+K/NNbiKmRTSXRdVhxqvEiwa6DjeSyl9Ya9vJVAvWaxIfMp/S2RI MPiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :mime-version:content-transfer-encoding; bh=HvksfxDJztssxsSA8yomJBjdYl2oiH6i1OWje0NSK68=; b=a4iQnvf6cWbCflhrmGe+fW1AAB4/MUS9reLw6KETgV+c2bu5IVfyguoS+njbPUUwsW hgz5iVxIVaGdVsO0OvTUGdq531aeUX+mSX1dyjtGd1W/yzmg6RFAQ9YTxj5r7XX/Gr71 wHvhU8PxS04EQkEplEriCSJvayV39h5bZDOux6EBx1oz4iFBuakc8ftHTEQ+jsbOQQ+X Y++ZjGvIPEreroAp/KNlyUk1A5Fv+a5HNoIbuJFBQfACqgMzp+IuklW4M41vgpHv4Gdx P0oheqnOukNjuLgMTs8K7BBFkQ8RjUanoF3cXK637fmA2qDB0snWnpdhgnq4VsaOPQzP 4m+A== X-Gm-Message-State: AJcUukd+qgBO/Df05jijRHFgXkYi6WRJXk4HaiHb2nMFZpgEqnrSBtHu 8qqIpTlEmWb8sOBvcIcM+9Q= X-Google-Smtp-Source: ALg8bN4hR5JHAR0QgWFlLt47EapfO3F9rK7iPGqJHwh2u7bm3a1cPQC0m0ejROPykggfZEk+txGwzw== X-Received: by 2002:a17:902:e085:: with SMTP id cb5mr45940195plb.24.1546509332850; Thu, 03 Jan 2019 01:55:32 -0800 (PST) Received: from huangrandall.ntc.corp.google.com ([2401:fa00:fc:1:6924:4b22:cf4b:bbca]) by smtp.gmail.com with ESMTPSA id g26sm71451814pfh.61.2019.01.03.01.55.31 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 03 Jan 2019 01:55:32 -0800 (PST) From: Randall Huang X-Google-Original-From: Randall Huang To: jejb@linux.vnet.ibm.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: huangrandall@google.com Subject: [PATCH] scsi: associate bio write hint with WRITE CDB Date: Thu, 3 Jan 2019 17:55:28 +0800 Message-Id: <20190103095528.102345-1-huangrandall@google.com> X-Mailer: git-send-email 2.20.1.415.g653613c723-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In SPC-3, WRITE(10)/(16) support grouping function. Let's associate bio write hint with group number for enabling StreamID or Turbo Write feature. Change-Id: I565c8e0c1d10e17a23e73f2a02c1adbd198b04b3 Signed-off-by: Randall Huang --- drivers/scsi/sd.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 4b49cb67617e..db48a849107e 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1201,7 +1201,11 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt) SCpnt->cmnd[11] = (unsigned char) (this_count >> 16) & 0xff; SCpnt->cmnd[12] = (unsigned char) (this_count >> 8) & 0xff; SCpnt->cmnd[13] = (unsigned char) this_count & 0xff; - SCpnt->cmnd[14] = SCpnt->cmnd[15] = 0; + if (rq_data_dir(rq) == WRITE) + SCpnt->cmnd[14] = rq->bio->bi_write_hint & 0x3f; + else + SCpnt->cmnd[14] = 0; + SCpnt->cmnd[15] = 0; } else if ((this_count > 0xff) || (block > 0x1fffff) || scsi_device_protection(SCpnt->device) || SCpnt->device->use_10_for_rw) { @@ -1211,9 +1215,13 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt) SCpnt->cmnd[3] = (unsigned char) (block >> 16) & 0xff; SCpnt->cmnd[4] = (unsigned char) (block >> 8) & 0xff; SCpnt->cmnd[5] = (unsigned char) block & 0xff; - SCpnt->cmnd[6] = SCpnt->cmnd[9] = 0; + if (rq_data_dir(rq) == WRITE) + SCpnt->cmnd[6] = rq->bio->bi_write_hint & 0x1f; + else + SCpnt->cmnd[6] = 0; SCpnt->cmnd[7] = (unsigned char) (this_count >> 8) & 0xff; SCpnt->cmnd[8] = (unsigned char) this_count & 0xff; + SCpnt->cmnd[9] = 0; } else { if (unlikely(rq->cmd_flags & REQ_FUA)) { /* -- 2.20.1.415.g653613c723-goog