From patchwork Fri Mar 19 01:52:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shiyang Ruan X-Patchwork-Id: 12149717 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=-13.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 5CEF8C432C3 for ; Fri, 19 Mar 2021 01:54:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E23F64F04 for ; Fri, 19 Mar 2021 01:54:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232805AbhCSByE (ORCPT ); Thu, 18 Mar 2021 21:54:04 -0400 Received: from mail.cn.fujitsu.com ([183.91.158.132]:41531 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S233206AbhCSBxw (ORCPT ); Thu, 18 Mar 2021 21:53:52 -0400 IronPort-HdrOrdr: A9a23:9ZhpB6iJvsmtHmbHsKShAWs1jHBQXjoji2hD6mlwRA09T+WzkceykPMHkSLlkTp5YgBFpfmsGomlBUnd+5l8/JULMd6ZMTXOlWO0IOhZg7fK7DHtFib3/OwY9YoIScJDIfLqC1wSt6fHyS2ZN/pl/9Wd6qCvgo7lvhJQZCVncbtp4Qs8KivzKDwUeCB8CZA0FIWR66N8zlLORV0scs+5CnMZNtKzxeHjqZSOW347Li9iwAyPoBft07TiDiWfty10bxp/hZsk7kjJ+jaU2pme X-IronPort-AV: E=Sophos;i="5.81,259,1610380800"; d="scan'208";a="105876746" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 19 Mar 2021 09:53:50 +0800 Received: from G08CNEXMBPEKD06.g08.fujitsu.local (unknown [10.167.33.206]) by cn.fujitsu.com (Postfix) with ESMTP id 9903D4CEA871; Fri, 19 Mar 2021 09:53:44 +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; Fri, 19 Mar 2021 09:53:44 +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, 19 Mar 2021 09:53:44 +0800 From: Shiyang Ruan To: , , , CC: , , , , , , , , , Subject: [PATCH v3 10/10] fs/xfs: Add dedupe support for fsdax Date: Fri, 19 Mar 2021 09:52:37 +0800 Message-ID: <20210319015237.993880-11-ruansy.fnst@fujitsu.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210319015237.993880-1-ruansy.fnst@fujitsu.com> References: <20210319015237.993880-1-ruansy.fnst@fujitsu.com> MIME-Version: 1.0 X-yoursite-MailScanner-ID: 9903D4CEA871.A1D44 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: ruansy.fnst@fujitsu.com Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org Add xfs_break_two_dax_layouts() to break layout for tow dax files. Then call compare range function only when files are both DAX or not. Signed-off-by: Shiyang Ruan --- fs/xfs/xfs_file.c | 20 ++++++++++++++++++++ fs/xfs/xfs_inode.c | 8 +++++++- fs/xfs/xfs_inode.h | 1 + fs/xfs/xfs_reflink.c | 5 +++-- 4 files changed, 31 insertions(+), 3 deletions(-) diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 1987d15eab61..82467d08e3ce 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -784,6 +784,26 @@ xfs_break_dax_layouts( 0, 0, xfs_wait_dax_page(inode)); } +int +xfs_break_two_dax_layouts( + struct inode *src, + struct inode *dest) +{ + int error; + bool retry = false; + +retry: + error = xfs_break_dax_layouts(src, &retry); + if (error || retry) + goto retry; + + error = xfs_break_dax_layouts(dest, &retry); + if (error || retry) + goto retry; + + return error; +} + int xfs_break_layouts( struct inode *inode, diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index b7352bc4c815..c11b11e59a83 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -3651,8 +3651,10 @@ xfs_ilock2_io_mmap( struct xfs_inode *ip2) { int ret; + struct inode *inode1 = VFS_I(ip1); + struct inode *inode2 = VFS_I(ip2); - ret = xfs_iolock_two_inodes_and_break_layout(VFS_I(ip1), VFS_I(ip2)); + ret = xfs_iolock_two_inodes_and_break_layout(inode1, inode2); if (ret) return ret; if (ip1 == ip2) @@ -3660,6 +3662,10 @@ xfs_ilock2_io_mmap( else xfs_lock_two_inodes(ip1, XFS_MMAPLOCK_EXCL, ip2, XFS_MMAPLOCK_EXCL); + + if (IS_DAX(inode1) && IS_DAX(inode2)) + ret = xfs_break_two_dax_layouts(inode1, inode2); + return 0; } diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index eca333f5f715..9ed7a2895602 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -431,6 +431,7 @@ enum xfs_prealloc_flags { int xfs_update_prealloc_flags(struct xfs_inode *ip, enum xfs_prealloc_flags flags); +int xfs_break_two_dax_layouts(struct inode *inode1, struct inode *inode2); int xfs_break_layouts(struct inode *inode, uint *iolock, enum layout_break_reason reason); diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index 73c556c2ff76..e62b00c2a0c8 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -29,6 +29,7 @@ #include "xfs_iomap.h" #include "xfs_sb.h" #include "xfs_ag_resv.h" +#include /* * Copy on Write of Shared Blocks @@ -1303,8 +1304,8 @@ xfs_reflink_remap_prep( if (XFS_IS_REALTIME_INODE(src) || XFS_IS_REALTIME_INODE(dest)) goto out_unlock; - /* Don't share DAX file data for now. */ - if (IS_DAX(inode_in) || IS_DAX(inode_out)) + /* Don't share DAX file data with non-DAX file. */ + if (IS_DAX(inode_in) != IS_DAX(inode_out)) goto out_unlock; if (IS_DAX(inode_in))