LFS_MUSTCLEAN
if (fs->lfs_flags & LFS_MUSTCLEAN) {
if (fs->lfs_flags & LFS_MUSTCLEAN)
fs->lfs_flags |= LFS_MUSTCLEAN;
fs->lfs_flags &= ~LFS_MUSTCLEAN;
ci.flags = (fs->lfs_flags & LFS_MUSTCLEAN)