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 3E000C43387 for ; Thu, 3 Jan 2019 09:19:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F42052073D for ; Thu, 3 Jan 2019 09:19:44 +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="qZbt0Yzi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730112AbfACJTo (ORCPT ); Thu, 3 Jan 2019 04:19:44 -0500 Received: from mail-pg1-f194.google.com ([209.85.215.194]:33302 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728477AbfACJTn (ORCPT ); Thu, 3 Jan 2019 04:19:43 -0500 Received: by mail-pg1-f194.google.com with SMTP id z11so15773524pgu.0; Thu, 03 Jan 2019 01:19:42 -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=eM/fiTic0aMaCgmTxDx4WWLLOVwwI2n4rkkI5hGKZoY=; b=qZbt0YziqBGM9Bym8j59Wats+tCkFokKuP3LuLua4aufkYtybz6FXZSxNvegwepYFv V8YPQsiaUw19idRQYMvLQEWK478ol7VANBZ+vGfWOxVoz8/sAHb2uyzyuhqBJWs4g7Zc /Fv33xVa2H8b9RhpHpA2LFDQvDvk4AerUukOkb11b0j5XEsiulq3TlR07bdqCyy7a1Yq Zcy0XMTExxuh/cbBDolsAWu91/ysv5xc+AP6Hxv+TIQHx/Hi2YD4lefpZGzF0ykNxN/Q yFVdey1npTNI1JDPPa6AT2kfw6NO7ndk8VtY4SZ6yzmWiUQeoW8HBSPpqt+xgz9qIjCC b+7g== 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=eM/fiTic0aMaCgmTxDx4WWLLOVwwI2n4rkkI5hGKZoY=; b=NRrG6PdHpENqovCMxSbVOHrCjuVrBVNTL//JrQcM3CHlcoIkArfBDzAWsiD5D/DyyR 2uXm+qnzvu287SJ/SvMTcv/w4tkl5Vg+twPraxXIPMUv+vBFPFJ02km75sSmt2vv3LkY faO8cblwRx07IGYGhrN36vFvcnD+UT/5QCy8ksDP+YG4y/1OfISrSpQvpqxdBn4atWkS aSyKgnNIhOZIKmHqnuztqE7QvB+MfGaMH77Uz712+sxBPhdqFxlAkdNvEYFPvScoPpoW Cr+J6OGOIaJg3mMZi2+ofIcNJqUqTkFyxzvl1itXIB6mj/TIhXiFpXpM6/HsvIeu2Lix 2pMA== X-Gm-Message-State: AJcUukepOY6LwWaNJq56ijK38j32Z6KU63jGI+qglReYy/35g8V7obZo 28VsiRmUizDIZ96/izK95F6ld/FV X-Google-Smtp-Source: ALg8bN6ue8WZXUxPhH/e80BTSHSgsnRiujlK/Zhp++VLUbZtAZJKKvMt0GNtsSbf/qYbryhose7Kog== X-Received: by 2002:a63:3204:: with SMTP id y4mr16317953pgy.41.1546507181871; Thu, 03 Jan 2019 01:19:41 -0800 (PST) Received: from huangrandall.ntc.corp.google.com ([2401:fa00:fc:1:6924:4b22:cf4b:bbca]) by smtp.gmail.com with ESMTPSA id w5sm72046135pfn.89.2019.01.03.01.19.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 03 Jan 2019 01:19:41 -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 17:19:35 +0800 Message-Id: <20190103091935.380-1-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. Bug: 120900381 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..831c0c81ffb9 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