From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 59F6319D065 for ; Sun, 26 Oct 2025 17:40:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761500409; cv=none; b=WSvUAR1y99ulSHe82WNg79jOl2sRq4sFXs2UpdzzMDfrq2pM00JwmWsV9abRuuDWzfFXNSU1I5w+/05gGMQLk4KHd8EgXjQTc95qUEWIPc0Ur2ZGNlcNWN1Yt9Mu6wz3p+EO2N36FTm5bZ6zqrwBabA8d8WI2/6PJrc5+a2TTYg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761500409; c=relaxed/simple; bh=bhb0lZC4vlE26Mo1UMEdaFplTJCS2JDS5L9yvXb34io=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sjJR718zd2nT+64RbNMbfoVSsk434BMHBGioYVYECbnD7eoWuX7bz7Q2bTucCsQgTDWX0+bEkUBr7OXm0eISTC0R79woYTOQ27AUasMIhqfpN5ZDD4tp+Pp4tWZqLLhDH6REyCUXXye7oQryuDXDC0sYooTYIjaFWjGLayO7+Lo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qbYS1SrG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qbYS1SrG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1D794C116B1; Sun, 26 Oct 2025 17:40:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761500408; bh=bhb0lZC4vlE26Mo1UMEdaFplTJCS2JDS5L9yvXb34io=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qbYS1SrGwhDa4TQVpG9jphWON0f6bIfGeZ75l6xRDMRfhSDHIpT6uub0GeQJEjb9i oPtztwCGEmn/WgsHPVGRR/ISBE2DvhR7YfDlaC7aEwt+1rscOv2Fs7Y5PtnpT6w7Iu 1svEpXmDBBW91TvnQEg1Z4TYQ161o0bCgC6626/ICFnMP08mpqPQDJZWEMPNeVvjwa IF9zQKxIoMvPxku7zK0M9zKXqO4pFpxRUDrSuL9jH9OoC9k9vFiFt87x0u1CoQPYpy VG1ubz72YaKue5lnJcnWt/zYvcEKd48zq7gOUMHjV6g05y35hYDPwoKY7RbdpaZjdt QuDgMg+yegVkQ== From: Sasha Levin To: stable@vger.kernel.org Cc: "Darrick J. Wong" , Christoph Hellwig , Carlos Maiolino , Carlos Maiolino , Sasha Levin Subject: [PATCH 6.17.y] xfs: always warn about deprecated mount options Date: Sun, 26 Oct 2025 13:40:05 -0400 Message-ID: <20251026174005.165056-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <2025102644-leverage-whiny-afee@gregkh> References: <2025102644-leverage-whiny-afee@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Darrick J. Wong" [ Upstream commit 630785bfbe12c3ee3ebccd8b530a98d632b7e39d ] The deprecation of the 'attr2' mount option in 6.18 wasn't entirely successful because nobody noticed that the kernel never printed a warning about attr2 being set in fstab if the only xfs filesystem is the root fs; the initramfs mounts the root fs with no mount options; and the init scripts only conveyed the fstab options by remounting the root fs. Fix this by making it complain all the time. Cc: stable@vger.kernel.org # v5.13 Fixes: 92cf7d36384b99 ("xfs: Skip repetitive warnings about mount options") Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig Reviewed-by: Carlos Maiolino Signed-off-by: Carlos Maiolino [ Update existing xfs_fs_warn_deprecated() callers ] Signed-off-by: Sasha Levin --- fs/xfs/xfs_super.c | 33 +++++++++++++++++++++------------ 1 file changed, 21 insertions(+), 12 deletions(-) diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index bb0a82635a770..9a7dd3a36f74f 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1386,16 +1386,25 @@ suffix_kstrtoull( static inline void xfs_fs_warn_deprecated( struct fs_context *fc, - struct fs_parameter *param, - uint64_t flag, - bool value) + struct fs_parameter *param) { - /* Don't print the warning if reconfiguring and current mount point - * already had the flag set + /* + * Always warn about someone passing in a deprecated mount option. + * Previously we wouldn't print the warning if we were reconfiguring + * and current mount point already had the flag set, but that was not + * the right thing to do. + * + * Many distributions mount the root filesystem with no options in the + * initramfs and rely on mount -a to remount the root fs with the + * options in fstab. However, the old behavior meant that there would + * never be a warning about deprecated mount options for the root fs in + * /etc/fstab. On a single-fs system, that means no warning at all. + * + * Compounding this problem are distribution scripts that copy + * /proc/mounts to fstab, which means that we can't remove mount + * options unless we're 100% sure they have only ever been advertised + * in /proc/mounts in response to explicitly provided mount options. */ - if ((fc->purpose & FS_CONTEXT_FOR_RECONFIGURE) && - !!(XFS_M(fc->root->d_sb)->m_features & flag) == value) - return; xfs_warn(fc->s_fs_info, "%s mount option is deprecated.", param->key); } @@ -1543,19 +1552,19 @@ xfs_fs_parse_param( #endif /* Following mount options will be removed in September 2025 */ case Opt_ikeep: - xfs_fs_warn_deprecated(fc, param, XFS_FEAT_IKEEP, true); + xfs_fs_warn_deprecated(fc, param); parsing_mp->m_features |= XFS_FEAT_IKEEP; return 0; case Opt_noikeep: - xfs_fs_warn_deprecated(fc, param, XFS_FEAT_IKEEP, false); + xfs_fs_warn_deprecated(fc, param); parsing_mp->m_features &= ~XFS_FEAT_IKEEP; return 0; case Opt_attr2: - xfs_fs_warn_deprecated(fc, param, XFS_FEAT_ATTR2, true); + xfs_fs_warn_deprecated(fc, param); parsing_mp->m_features |= XFS_FEAT_ATTR2; return 0; case Opt_noattr2: - xfs_fs_warn_deprecated(fc, param, XFS_FEAT_NOATTR2, true); + xfs_fs_warn_deprecated(fc, param); parsing_mp->m_features |= XFS_FEAT_NOATTR2; return 0; case Opt_max_open_zones: -- 2.51.0