If device is read-only, we should not proceed data recovery. But, if the previous checkpoint was done by normal clean shutdown, it's safe to proceed the recovery, since there will be no data to be recovered.
Signed-off-by: Jaegeuk Kim <[email protected]> --- fs/f2fs/super.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 0ca1fb2..7039969 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1149,6 +1149,15 @@ try_onemore: /* recover fsynced data */ if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { + /* + * mount should be failed, when device has readonly mode, and + * previous checkpoint was not done by clean system shutdown. + */ + if (bdev_read_only(sb->s_bdev) && + !is_set_ckpt_flags(sbi->ckpt, CP_UMOUNT_FLAG)) { + err = -EROFS; + goto free_kobj; + } err = recover_fsync_data(sbi); if (err) { f2fs_msg(sb, KERN_ERR, -- 2.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
