ntfs: fail remount on sync errors and keep the dirty bit on SB_FORCE

ntfs_reconfigure() currently ignores sync_filesystem() errors, allowing
a regular read-only remount to succeed even when dirty data was not
synced. Check the error and fail regular remounts, leaving the
superblock read-write so ntfs_put_super() can retry at unmount.

SB_FORCE does not wait for writers already in progress, so it must not
clear the on-disk dirty bit. Warn and continue on sync errors for
SB_FORCE. A forced remount updates the dirty state only when errors
have been recorded, and never clears the dirty bit. Skip the commit if
that state update fails, since the in-memory flags may be inconsistent.

Reported-by: Hyunchul Lee <hyc.lee@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Hongling Zeng <zenghongling@kylinos.cn>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Reviewed-by: Baolin Liu <liubaolin@kylinos.cn>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

0 files changed, 0 insertions, 0 deletions