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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS,UNPARSEABLE_RELAY 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 87296C43381 for ; Thu, 14 Feb 2019 02:31:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 477FE21904 for ; Thu, 14 Feb 2019 02:31:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="agDZ79Tn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728959AbfBNCbo (ORCPT ); Wed, 13 Feb 2019 21:31:44 -0500 Received: from userp2130.oracle.com ([156.151.31.86]:41946 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726325AbfBNCbo (ORCPT ); Wed, 13 Feb 2019 21:31:44 -0500 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x1E2OJWI190193; Thu, 14 Feb 2019 02:31:28 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=to : cc : subject : from : references : date : in-reply-to : message-id : mime-version : content-type; s=corp-2018-07-02; bh=ILZdBoH9xHJVjmQA7MBd5DfsMcBb4zKTy6OPACDKbA4=; b=agDZ79TnMY3u1JMJeCm5OA/6XBWon3el0Hh2IAPTgi60gANU/dExQD6ro7G0VyhDOzHc KubwkolOUY0x8FhoaAYoz6ncgIHyeuNPAofi48IZ27sSxmX0gH6o/igxMgas7ODUJ1NP ltyAOn4I1QY4DKa5bILzqWaemVxsHR6fDsW11GD5fWVtY/L+RfLrq26GAVeDLKQnjpyY zoIHIaytoje3zsfep/DaPpHzvtEvDXDJm7ihvP43P9JYraY1f6enSCbKlxsxvyZmS29E BmBlqgvrK4NCM9DEznWjemJFw2sCBua1XZfnCErO4fNzcIxGBfWvwn2e9+VxMG8uKaM3 0w== Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by userp2130.oracle.com with ESMTP id 2qhreknf59-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 14 Feb 2019 02:31:28 +0000 Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id x1E2VLnV012041 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 14 Feb 2019 02:31:22 GMT Received: from abhmp0003.oracle.com (abhmp0003.oracle.com [141.146.116.9]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x1E2VK1h026681; Thu, 14 Feb 2019 02:31:20 GMT Received: from ca-mkp.ca.oracle.com (/10.159.214.123) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 13 Feb 2019 18:31:20 -0800 To: "zhangxiaoxu \(A\)" Cc: Christoph Hellwig , Heinz Mauelshagen , John Dorminy , , "Martin K. Petersen" , "Mike Snitzer" , , , Alasdair G Kergon Subject: Re: [dm-devel] block: Fix a WRITE SAME BUG_ON From: "Martin K. Petersen" Organization: Oracle Corporation References: <20190125021107.4595-1-zhangxiaoxu5@huawei.com> <20190128221441.GA24102@redhat.com> <20190131103924.GA22503@infradead.org> <20190201073527.GA14758@infradead.org> <20190201161803.GA21124@infradead.org> Date: Wed, 13 Feb 2019 21:31:16 -0500 In-Reply-To: (zhangxiaoxu's message of "Tue, 12 Feb 2019 11:11:29 +0800") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9166 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=704 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902140017 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org zhangxiaoxu, > Any progress about the problme? > Should we disable the write same when stack the different LBA disks? Yes, please. -- Martin K. Petersen Oracle Linux Engineering