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=-5.3 required=3.0 tests=BAYES_00, 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 6F6B9C433E0 for ; Thu, 25 Feb 2021 07:35:45 +0000 (UTC) Received: from aserp2130.oracle.com (aserp2130.oracle.com [141.146.126.79]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B524A64ED9 for ; Thu, 25 Feb 2021 07:35:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B524A64ED9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=ocfs2-devel-bounces@oss.oracle.com Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 11P7ZRGV107789; Thu, 25 Feb 2021 07:35:43 GMT Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by aserp2130.oracle.com with ESMTP id 36vr627ts1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 25 Feb 2021 07:35:43 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 11P7UbtY078255; Thu, 25 Feb 2021 07:35:42 GMT Received: from oss.oracle.com (oss-old-reserved.oracle.com [137.254.22.2]) by userp3030.oracle.com with ESMTP id 36ucc0vdv4-1 (version=TLSv1 cipher=AES256-SHA bits=256 verify=NO); Thu, 25 Feb 2021 07:35:42 +0000 Received: from localhost ([127.0.0.1] helo=lb-oss.oracle.com) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1lFBBV-0004u2-JJ; Wed, 24 Feb 2021 23:35:41 -0800 Received: from aserp3020.oracle.com ([141.146.126.70]) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1lFBBN-0004ta-NM for ocfs2-devel@oss.oracle.com; Wed, 24 Feb 2021 23:35:33 -0800 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 11P7Ufvl107641 for ; Thu, 25 Feb 2021 07:35:33 GMT Received: from userp2040.oracle.com (userp2040.oracle.com [156.151.31.90]) by aserp3020.oracle.com with ESMTP id 36ucb1py8r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Thu, 25 Feb 2021 07:35:33 +0000 Received: from pps.filterd (userp2040.oracle.com [127.0.0.1]) by userp2040.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 11P7X4bq036048 for ; Thu, 25 Feb 2021 07:35:32 GMT Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by userp2040.oracle.com with ESMTP id 36wskey4mc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Thu, 25 Feb 2021 07:35:32 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id D893868B05; Thu, 25 Feb 2021 08:35:25 +0100 (CET) Date: Thu, 25 Feb 2021 08:35:25 +0100 From: Christoph Hellwig To: "Darrick J. Wong" Message-ID: <20210225073525.GA3448@lst.de> References: <20210207170924.2933035-1-ruansy.fnst@cn.fujitsu.com> <20210207170924.2933035-6-ruansy.fnst@cn.fujitsu.com> <20210208151920.GE12872@lst.de> <9193e305-22a1-3928-0675-af1cecd28942@cn.fujitsu.com> <20210209093438.GA630@lst.de> <79b0d65c-95dd-4821-e412-ab27c8cb6942@cn.fujitsu.com> <20210210131928.GA30109@lst.de> <20210218162018.GT7193@magnolia> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210218162018.GT7193@magnolia> User-Agent: Mutt/1.5.17 (2007-11-01) X-PDR: PASS X-Source-IP: 213.95.11.211 X-ServerName: verein.lst.de X-Proofpoint-SPF-Result: None X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9905 signatures=668683 X-Proofpoint-Spam-Details: rule=tap_notspam policy=tap score=0 spamscore=0 adultscore=0 lowpriorityscore=0 bulkscore=0 mlxscore=0 mlxlogscore=809 phishscore=0 priorityscore=0 suspectscore=0 malwarescore=0 clxscore=277 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250062 X-Spam: Clean Cc: jack@suse.cz, Ruan Shiyang , linux-nvdimm@lists.01.org, darrick.wong@oracle.com, david@fromorbit.com, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, ocfs2-devel@oss.oracle.com, viro@zeniv.linux.org.uk, Goldwyn Rodrigues , linux-fsdevel@vger.kernel.org, dan.j.williams@intel.com, linux-btrfs@vger.kernel.org Subject: Re: [Ocfs2-devel] [PATCH 5/7] fsdax: Dedup file range to use a compare function X-BeenThere: ocfs2-devel@oss.oracle.com X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: ocfs2-devel-bounces@oss.oracle.com Errors-To: ocfs2-devel-bounces@oss.oracle.com X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9905 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 adultscore=0 phishscore=0 spamscore=0 suspectscore=0 bulkscore=0 malwarescore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250062 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9905 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 bulkscore=0 clxscore=1034 mlxlogscore=999 lowpriorityscore=0 phishscore=0 impostorscore=0 adultscore=0 mlxscore=0 priorityscore=1501 malwarescore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250062 On Thu, Feb 18, 2021 at 08:20:18AM -0800, Darrick J. Wong wrote: > > I think a nested call like this is necessary. That's why I use the open > > code way. > > This might be a good place to implement an iomap_apply2() loop that > actually /does/ walk all the extents of file1 and file2. There's now > two users of this idiom. Why do we need a special helper for that? > (Possibly structured as a "get next mappings from both" generator > function like Matthew Wilcox keeps asking for. :)) OTOH this might be a good first use for that. _______________________________________________ Ocfs2-devel mailing list Ocfs2-devel@oss.oracle.com https://oss.oracle.com/mailman/listinfo/ocfs2-devel