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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, 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 3F0FBC433DB for ; Fri, 29 Jan 2021 06:28:23 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B024A64DFB for ; Fri, 29 Jan 2021 06:28:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B024A64DFB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=cn.fujitsu.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 0EDBC6B006C; Fri, 29 Jan 2021 01:28:21 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 0907C6B0072; Fri, 29 Jan 2021 01:28:20 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D65A26B006C; Fri, 29 Jan 2021 01:28:20 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0108.hostedemail.com [216.40.44.108]) by kanga.kvack.org (Postfix) with ESMTP id B3DB16B0070 for ; Fri, 29 Jan 2021 01:28:20 -0500 (EST) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 763E033C4 for ; Fri, 29 Jan 2021 06:28:20 +0000 (UTC) X-FDA: 77757833160.01.front49_3804734275a6 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id 555FD10046461 for ; Fri, 29 Jan 2021 06:28:20 +0000 (UTC) X-HE-Tag: front49_3804734275a6 X-Filterd-Recvd-Size: 5430 Received: from heian.cn.fujitsu.com (mail.cn.fujitsu.com [183.91.158.132]) by imf28.hostedemail.com (Postfix) with ESMTP for ; Fri, 29 Jan 2021 06:28:17 +0000 (UTC) X-IronPort-AV: E=Sophos;i="5.79,384,1602518400"; d="scan'208";a="103973619" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 29 Jan 2021 14:28:05 +0800 Received: from G08CNEXMBPEKD04.g08.fujitsu.local (unknown [10.167.33.201]) by cn.fujitsu.com (Postfix) with ESMTP id 304B448990D2; Fri, 29 Jan 2021 14:28:01 +0800 (CST) Received: from G08CNEXCHPEKD04.g08.fujitsu.local (10.167.33.200) by G08CNEXMBPEKD04.g08.fujitsu.local (10.167.33.201) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 29 Jan 2021 14:28:01 +0800 Received: from irides.mr.mr.mr (10.167.225.141) by G08CNEXCHPEKD04.g08.fujitsu.local (10.167.33.209) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 29 Jan 2021 14:28:01 +0800 From: Shiyang Ruan To: , , , , , CC: , , , , , , , , Subject: [PATCH RESEND v2 00/10] fsdax: introduce fs query to support reflink Date: Fri, 29 Jan 2021 14:27:47 +0800 Message-ID: <20210129062757.1594130-1-ruansy.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.30.0 MIME-Version: 1.0 Content-Type: text/plain X-yoursite-MailScanner-ID: 304B448990D2.AA014 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: ruansy.fnst@cn.fujitsu.com Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: This patchset is aimed to support shared pages tracking for fsdax. Resend V2: - Cc dm-devel instead of linux-raid Change from V1: - Add the old memory-failure handler back for rolling back - Add callback in MD's ->rmap() to support multiple mapping of dm devic= e - Add judgement for CONFIG_SYSFS - Add pfn_valid() judgement in hwpoison_filter() - Rebased to v5.11-rc5 Change from RFC v3: - Do not lock dax entry in memory failure handler - Add a helper function for corrupted_range - Add restrictions in xfs code - Fix code style - remove the useless association and lock in fsdax Change from RFC v2: - Adjust the order of patches - Divide the infrastructure and the drivers that use it - Rebased to v5.10 Change from RFC v1: - Introduce ->block_lost() for block device - Support mapped device - Add 'not available' warning for realtime device in XFS - Rebased to v5.10-rc1 This patchset moves owner tracking from dax_assocaite_entry() to pmem device driver, by introducing an interface ->memory_failure() of struct pagemap. This interface is called by memory_failure() in mm, and implemented by pmem device. Then pmem device calls its ->corrupted_range= () to find the filesystem which the corrupted data located in, and call filesystem handler to track files or metadata assocaited with this page. Finally we are able to try to fix the corrupted data in filesystem and do other necessary processing, such as killing processes who are using the files affected. The call trace is like this: memory_failure() pgmap->ops->memory_failure() =3D> pmem_pgmap_memory_failure() gendisk->fops->corrupted_range() =3D> - pmem_corrupted_range() - md_blk_corrupted_range() sb->s_ops->currupted_range() =3D> xfs_fs_corrupted_range() xfs_rmap_query_range() xfs_currupt_helper() * corrupted on metadata try to recover data, call xfs_force_shutdown() * corrupted on file data=20 try to recover data, call mf_dax_mapping_kill_procs() The fsdax & reflink support for XFS is not contained in this patchset. (Rebased on v5.11-rc5) Shiyang Ruan (10): pagemap: Introduce ->memory_failure() blk: Introduce ->corrupted_range() for block device fs: Introduce ->corrupted_range() for superblock mm, fsdax: Refactor memory-failure handler for dax mapping mm, pmem: Implement ->memory_failure() in pmem driver pmem: Implement ->corrupted_range() for pmem driver dm: Introduce ->rmap() to find bdev offset md: Implement ->corrupted_range() xfs: Implement ->corrupted_range() for XFS fs/dax: Remove useless functions block/genhd.c | 6 ++ drivers/md/dm-linear.c | 20 ++++ drivers/md/dm.c | 61 +++++++++++ drivers/nvdimm/pmem.c | 44 ++++++++ fs/block_dev.c | 42 +++++++- fs/dax.c | 63 ++++------- fs/xfs/xfs_fsops.c | 5 + fs/xfs/xfs_mount.h | 1 + fs/xfs/xfs_super.c | 109 +++++++++++++++++++ include/linux/blkdev.h | 2 + include/linux/dax.h | 1 + include/linux/device-mapper.h | 5 + include/linux/fs.h | 2 + include/linux/genhd.h | 3 + include/linux/memremap.h | 8 ++ include/linux/mm.h | 9 ++ mm/memory-failure.c | 190 +++++++++++++++++++++++----------- 17 files changed, 466 insertions(+), 105 deletions(-) --=20 2.30.0