From nobody Wed Feb 11 21:30:56 2026 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 25341C77B6F for ; Tue, 11 Apr 2023 14:28:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229742AbjDKO2C (ORCPT ); Tue, 11 Apr 2023 10:28:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229757AbjDKO1q (ORCPT ); Tue, 11 Apr 2023 10:27:46 -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 604D35BB6; Tue, 11 Apr 2023 07:27:20 -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 B67C962799; Tue, 11 Apr 2023 14:27:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4C100C433D2; Tue, 11 Apr 2023 14:27:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1681223234; bh=6y1YeGPH/VDzbluu556WvHbrgod71MAnILEUbvu4oy4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IymI7Pv0rtcsh15nq7onOJEP+gWsO4qna8uXbEuQwaEVOvwsKzPwh2hcFyUaF4Lrx XdYZai9OWXt7UKRbAg3BTWw/42rJ4yWtC+dwFzLLGNkVahk09bUFcduCvRM1PtXiLw m002LBg/IFOgaiQgOCspNScOrKbSzHygYmekp4HClAirdjNF3Mjta7Br3SMRvZ1Rs8 HM61/lARWL0KAgsdQWzwTlXzaSZNHX9lmToIXAubJkrWLNqd+vMAe3mM1m2rG32YBI zDM8U6NpOEBIgE7Bl5vD5FaLjbFdKLB2ciLTdgD7mHHnnRJDt6pdJ3S+AA+P2K6IHv ChJgZLWcjeELQ== From: Jeff Layton To: Alexander Viro , Christian Brauner , "Darrick J. Wong" , Hugh Dickins , Andrew Morton Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 3/3] xfs: mark the inode for high-res timestamp update in getattr Date: Tue, 11 Apr 2023 10:27:08 -0400 Message-Id: <20230411142708.62475-4-jlayton@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230411142708.62475-1-jlayton@kernel.org> References: <20230411142708.62475-1-jlayton@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" When the mtime or ctime is being queried via getattr, ensure that we mark the inode for a high-res timestamp update on the next pass. Also, switch to current_cmtime for other c/mtime updates. With this change, we're better off having the NFS server just ignore the i_version field and have it use the ctime instead, so clear the STATX_CHANGE_COOKIE flag in the result mask in ->getattr. Signed-off-by: Jeff Layton --- fs/xfs/libxfs/xfs_trans_inode.c | 2 +- fs/xfs/xfs_acl.c | 2 +- fs/xfs/xfs_inode.c | 2 +- fs/xfs/xfs_iops.c | 15 ++++++++++++--- 4 files changed, 15 insertions(+), 6 deletions(-) diff --git a/fs/xfs/libxfs/xfs_trans_inode.c b/fs/xfs/libxfs/xfs_trans_inod= e.c index 8b5547073379..9ad7c229c617 100644 --- a/fs/xfs/libxfs/xfs_trans_inode.c +++ b/fs/xfs/libxfs/xfs_trans_inode.c @@ -63,7 +63,7 @@ xfs_trans_ichgtime( ASSERT(tp); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); =20 - tv =3D current_time(inode); + tv =3D current_cmtime(inode); =20 if (flags & XFS_ICHGTIME_MOD) inode->i_mtime =3D tv; diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c index 791db7d9c849..461adc58cf8c 100644 --- a/fs/xfs/xfs_acl.c +++ b/fs/xfs/xfs_acl.c @@ -233,7 +233,7 @@ xfs_acl_set_mode( xfs_ilock(ip, XFS_ILOCK_EXCL); xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); inode->i_mode =3D mode; - inode->i_ctime =3D current_time(inode); + inode->i_ctime =3D current_cmtime(inode); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); =20 if (xfs_has_wsync(mp)) diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 5808abab786c..80f9d731e261 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -843,7 +843,7 @@ xfs_init_new_inode( ip->i_df.if_nextents =3D 0; ASSERT(ip->i_nblocks =3D=3D 0); =20 - tv =3D current_time(inode); + tv =3D current_cmtime(inode); inode->i_mtime =3D tv; inode->i_atime =3D tv; inode->i_ctime =3D tv; diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 24718adb3c16..a0b07f90e16c 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -565,6 +565,15 @@ xfs_vn_getattr( if (xfs_is_shutdown(mp)) return -EIO; =20 + /* + * XFS uses the i_version infrastructure to track any change to + * the inode, including atime updates. This means that the i_version + * returned by getattr doesn't conform to what the callers expect. + * Clear it here so that nfsd will fake up a change cookie from the + * ctime instead. + */ + stat->result_mask &=3D ~STATX_CHANGE_COOKIE; + stat->size =3D XFS_ISIZE(ip); stat->dev =3D inode->i_sb->s_dev; stat->mode =3D inode->i_mode; @@ -573,8 +582,8 @@ xfs_vn_getattr( stat->gid =3D vfsgid_into_kgid(vfsgid); stat->ino =3D ip->i_ino; stat->atime =3D inode->i_atime; - stat->mtime =3D inode->i_mtime; - stat->ctime =3D inode->i_ctime; + if (request_mask & (STATX_CTIME|STATX_MTIME)) + fill_cmtime_and_mark(inode, stat); stat->blocks =3D XFS_FSB_TO_BB(mp, ip->i_nblocks + ip->i_delayed_blks); =20 if (xfs_has_v3inodes(mp)) { @@ -917,7 +926,7 @@ xfs_setattr_size( if (newsize !=3D oldsize && !(iattr->ia_valid & (ATTR_CTIME | ATTR_MTIME))) { iattr->ia_ctime =3D iattr->ia_mtime =3D - current_time(inode); + current_cmtime(inode); iattr->ia_valid |=3D ATTR_CTIME | ATTR_MTIME; } =20 --=20 2.39.2