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 9D7F1C433DB for ; Mon, 8 Feb 2021 10:55:42 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0D0F164E7A for ; Mon, 8 Feb 2021 10:55:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D0F164E7A 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 7F6FF6B0072; Mon, 8 Feb 2021 05:55:41 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 75AA06B0073; Mon, 8 Feb 2021 05:55:41 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5F76C6B0074; Mon, 8 Feb 2021 05:55:41 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0162.hostedemail.com [216.40.44.162]) by kanga.kvack.org (Postfix) with ESMTP id 4061F6B0072 for ; Mon, 8 Feb 2021 05:55:41 -0500 (EST) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id EE0C4180AD81A for ; Mon, 8 Feb 2021 10:55:40 +0000 (UTC) X-FDA: 77794794840.06.man94_44057ad275fe Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin06.hostedemail.com (Postfix) with ESMTP id B59A51003E4C7 for ; Mon, 8 Feb 2021 10:55:40 +0000 (UTC) X-HE-Tag: man94_44057ad275fe X-Filterd-Recvd-Size: 4975 Received: from heian.cn.fujitsu.com (mail.cn.fujitsu.com [183.91.158.132]) by imf46.hostedemail.com (Postfix) with ESMTP for ; Mon, 8 Feb 2021 10:55:39 +0000 (UTC) X-IronPort-AV: E=Sophos;i="5.81,161,1610380800"; d="scan'208";a="104328056" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 08 Feb 2021 18:55:34 +0800 Received: from G08CNEXMBPEKD06.g08.fujitsu.local (unknown [10.167.33.206]) by cn.fujitsu.com (Postfix) with ESMTP id 869654CE6F7F; Mon, 8 Feb 2021 18:55:32 +0800 (CST) Received: from G08CNEXCHPEKD04.g08.fujitsu.local (10.167.33.200) by G08CNEXMBPEKD06.g08.fujitsu.local (10.167.33.206) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 8 Feb 2021 18:55:33 +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; Mon, 8 Feb 2021 18:55:34 +0800 From: Shiyang Ruan To: , , , , , CC: , , , , , , , , Subject: [PATCH v3 00/11] fsdax: introduce fs query to support reflink Date: Mon, 8 Feb 2021 18:55:19 +0800 Message-ID: <20210208105530.3072869-1-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: 869654CE6F7F.ACD1D 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. Change from V2: - Split 8th patch into other related to make it easy to review - Other small fixes 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 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) =3D=3D Shiyang Ruan (11): pagemap: Introduce ->memory_failure() blk: Introduce ->corrupted_range() for block device fs: Introduce ->corrupted_range() for superblock block_dev: Introduce bd_corrupted_range() 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 | 45 ++++++++ fs/block_dev.c | 47 ++++++++- fs/dax.c | 63 ++++------- fs/xfs/xfs_fsops.c | 5 + fs/xfs/xfs_mount.h | 1 + fs/xfs/xfs_super.c | 112 ++++++++++++++++++++ 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, 475 insertions(+), 105 deletions(-) --=20 2.30.0