From patchwork Fri Aug 19 11:34:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeffrey Layton X-Patchwork-Id: 12948747 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57F9EC32772 for ; Fri, 19 Aug 2022 11:34:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348309AbiHSLez (ORCPT ); Fri, 19 Aug 2022 07:34:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347966AbiHSLey (ORCPT ); Fri, 19 Aug 2022 07:34:54 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BE905DB047; Fri, 19 Aug 2022 04:34:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5D243617AB; Fri, 19 Aug 2022 11:34:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E1015C433C1; Fri, 19 Aug 2022 11:34:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660908892; bh=V2k0NMVIrgt8WLIyR18szSE2DGtSyfglRqVICktd4EQ=; h=From:To:Cc:Subject:Date:From; b=gXb2Fj7z4gZg7GmGCleAWuzTrZ6C8k87aaw6G0WZCwj8Gab6EEcHiNcw3h+nJ7BB1 rTRJavVtvl8jZ+XNdZTgFN7RvF5kXTo3+rGAm+YeYUckRwV1flm16m27K1QiG8oFeR Zhkj0cu3D4dRiYhTsl9gz2TazexVVRRALu+Jodzr5Xl+snfLn+FUhH23U11rdd7XtZ C7N7ss4rQ/9kxv3yTAWFThMijQWOKHu7PMpVEIg3KO0KMWAdGhTThsC06HTjuUkzJc HqBGKttMVlsD+zMCR6hMQTNMV5AzqA315Zyn4jS3qnFCCDJSn8uqYe6KpC/Acmair5 OnBXSlvHs376A== From: Jeff Layton To: "Darrick J . Wong" Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-integrity@vger.kernel.org, Dave Chinner , NeilBrown , Trond Myklebust , David Wysochanski Subject: [PATCH] xfs: don't bump the i_version on an atime update in xfs_vn_update_time Date: Fri, 19 Aug 2022 07:34:50 -0400 Message-Id: <20220819113450.11885-1-jlayton@kernel.org> X-Mailer: git-send-email 2.37.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org xfs will update the i_version when updating only the atime value, which is not desirable for any of the current consumers of i_version. Doing so leads to unnecessary cache invalidations on NFS and extra measurement activity in IMA. Add a new XFS_ILOG_NOIVER flag, and use that to indicate that the transaction should not update the i_version. Set that value in xfs_vn_update_time if we're only updating the atime. Cc: Dave Chinner Cc: NeilBrown Cc: Trond Myklebust Cc: David Wysochanski Signed-off-by: Jeff Layton --- fs/xfs/libxfs/xfs_log_format.h | 2 +- fs/xfs/libxfs/xfs_trans_inode.c | 2 +- fs/xfs/xfs_iops.c | 10 +++++++--- 3 files changed, 9 insertions(+), 5 deletions(-) diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h index b351b9dc6561..866a4c5cf70c 100644 --- a/fs/xfs/libxfs/xfs_log_format.h +++ b/fs/xfs/libxfs/xfs_log_format.h @@ -323,7 +323,7 @@ struct xfs_inode_log_format_32 { #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */ #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */ - +#define XFS_ILOG_NOIVER 0x800 /* don't bump i_version */ /* * The timestamps are dirty, but not necessarily anything else in the inode diff --git a/fs/xfs/libxfs/xfs_trans_inode.c b/fs/xfs/libxfs/xfs_trans_inode.c index 8b5547073379..ffe6d296e7f9 100644 --- a/fs/xfs/libxfs/xfs_trans_inode.c +++ b/fs/xfs/libxfs/xfs_trans_inode.c @@ -126,7 +126,7 @@ xfs_trans_log_inode( * unconditionally. */ if (!test_and_set_bit(XFS_LI_DIRTY, &iip->ili_item.li_flags)) { - if (IS_I_VERSION(inode) && + if (!(flags & XFS_ILOG_NOIVER) && IS_I_VERSION(inode) && inode_maybe_inc_iversion(inode, flags & XFS_ILOG_CORE)) iversion_flags = XFS_ILOG_CORE; } diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 45518b8c613c..54db85a43dfb 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -1021,7 +1021,7 @@ xfs_vn_update_time( { struct xfs_inode *ip = XFS_I(inode); struct xfs_mount *mp = ip->i_mount; - int log_flags = XFS_ILOG_TIMESTAMP; + int log_flags = XFS_ILOG_TIMESTAMP|XFS_ILOG_NOIVER; struct xfs_trans *tp; int error; @@ -1041,10 +1041,14 @@ xfs_vn_update_time( return error; xfs_ilock(ip, XFS_ILOCK_EXCL); - if (flags & S_CTIME) + if (flags & S_CTIME) { inode->i_ctime = *now; - if (flags & S_MTIME) + log_flags &= ~XFS_ILOG_NOIVER; + } + if (flags & S_MTIME) { inode->i_mtime = *now; + log_flags &= ~XFS_ILOG_NOIVER; + } if (flags & S_ATIME) inode->i_atime = *now;