5.10-stable review patch. If anyone has any objections, please let me know.
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From: "Darrick J. Wong" djwong@kernel.org
[ 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 djwong@kernel.org Reviewed-by: Christoph Hellwig hch@lst.de Reviewed-by: Carlos Maiolino cmaiolino@redhat.com Signed-off-by: Carlos Maiolino cem@kernel.org [ adapted m_features field reference to m_flags ] Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/xfs/xfs_super.c | 33 +++++++++++++++++++++------------ 1 file changed, 21 insertions(+), 12 deletions(-)
--- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1162,16 +1162,25 @@ suffix_kstrtoint( 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_flags & flag) == value) - return; xfs_warn(fc->s_fs_info, "%s mount option is deprecated.", param->key); }
@@ -1314,19 +1323,19 @@ xfs_fc_parse_param( #endif /* Following mount options will be removed in September 2025 */ case Opt_ikeep: - xfs_fs_warn_deprecated(fc, param, XFS_MOUNT_IKEEP, true); + xfs_fs_warn_deprecated(fc, param); parsing_mp->m_flags |= XFS_MOUNT_IKEEP; return 0; case Opt_noikeep: - xfs_fs_warn_deprecated(fc, param, XFS_MOUNT_IKEEP, false); + xfs_fs_warn_deprecated(fc, param); parsing_mp->m_flags &= ~XFS_MOUNT_IKEEP; return 0; case Opt_attr2: - xfs_fs_warn_deprecated(fc, param, XFS_MOUNT_ATTR2, true); + xfs_fs_warn_deprecated(fc, param); parsing_mp->m_flags |= XFS_MOUNT_ATTR2; return 0; case Opt_noattr2: - xfs_fs_warn_deprecated(fc, param, XFS_MOUNT_NOATTR2, true); + xfs_fs_warn_deprecated(fc, param); parsing_mp->m_flags &= ~XFS_MOUNT_ATTR2; parsing_mp->m_flags |= XFS_MOUNT_NOATTR2; return 0;