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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 5CE46C352A3 for ; Thu, 13 Feb 2020 22:33:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2CC7321734 for ; Thu, 13 Feb 2020 22:33:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="JOiMFR20" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726968AbgBMWdN (ORCPT ); Thu, 13 Feb 2020 17:33:13 -0500 Received: from userp2130.oracle.com ([156.151.31.86]:46214 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726780AbgBMWdN (ORCPT ); Thu, 13 Feb 2020 17:33:13 -0500 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 01DMWc6H152983; Thu, 13 Feb 2020 22:33:11 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=to : from : subject : cc : message-id : date : mime-version : content-type : content-transfer-encoding; s=corp-2020-01-29; bh=NpjRCzo2rTzOe6HlOeVL9C/0xrjNS70JovCKzVWJyq0=; b=JOiMFR202QcuvnkGB0LI7wqPmJyOzy1cavZz2aE7epm5ZZGzKLnJLQHipLUeWnxHBNXY 2erB1gPLr2S3DRivQuVHHg6zAbT+AuHsoOEFAOLmqxnU7LWxeb/u3Saqw3dDYysYbLZ6 7Gn3W8djCqRC/3uUmjQXc64w2j+6mh5YLajFonjhDkIRPobBMnqOctvD3VcWs6agxirQ lawgdAztqwjZfc5+I/uBZvAL86MAFuONSXcoO8Ue2+rTkJdort5OXzHXbr9R0Q8N3q9N tvmQpLJ6aWUhefqnVL2mJi53IhcGtbXag1hyZhMEILpoTRC33EJMf8KAoyw89Y5MHZbh 1Q== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by userp2130.oracle.com with ESMTP id 2y2k88np70-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 13 Feb 2020 22:33:11 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 01DMRwR0061667; Thu, 13 Feb 2020 22:33:10 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserp3020.oracle.com with ESMTP id 2y4k38nsqx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 13 Feb 2020 22:33:10 +0000 Received: from abhmp0020.oracle.com (abhmp0020.oracle.com [141.146.116.26]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 01DMX9vD015102; Thu, 13 Feb 2020 22:33:09 GMT Received: from [192.168.1.223] (/67.1.3.112) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 13 Feb 2020 14:33:09 -0800 To: lsf-pc@lists.linux-foundation.org From: Allison Collins Subject: [Lsf-pc] [LSF/MM/BPF TOPIC] Atomic Writes Cc: xfs , linux-fsdevel Message-ID: Date: Thu, 13 Feb 2020 15:33:08 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9530 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 mlxlogscore=979 adultscore=0 bulkscore=0 malwarescore=0 phishscore=0 suspectscore=1 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002130160 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9530 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 lowpriorityscore=0 suspectscore=1 bulkscore=0 phishscore=0 mlxlogscore=999 mlxscore=0 malwarescore=0 impostorscore=0 clxscore=1015 spamscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002130160 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org Hi all, I know there's a lot of discussion on the list right now, but I'd like to get this out before too much time gets away. I would like to propose the topic of atomic writes. I realize the topic has been discussed before, but I have not found much activity for it recently so perhaps we can revisit it. We do have a customer who may have an interest, so I would like to discuss the current state of things, and how we can move forward. If efforts are in progress, and if not, what have we learned from the attempt. I also understand there are multiple ways to solve this problem that people may have opinions on. I've noticed some older patch sets trying to use a flag to control when dirty pages are flushed, though I think our customer would like to see a hardware solution via NVMe devices. So I would like to see if others have similar interests as well and what their thoughts may be. Thanks everyone! Allison