LFS_UNUSED_LBN
if (blkp->bi_lbn == LFS_UNUSED_LBN) {
if (blkp->bi_lbn == LFS_UNUSED_LBN) {
fs->lfs_cleaner_hint->bi_lbn == LFS_UNUSED_LBN) {
lfs_check(vp, LFS_UNUSED_LBN, 0);
lfs_check(dvp, LFS_UNUSED_LBN, 0);
lfs_check(dvp, LFS_UNUSED_LBN, 0);
lfs_check(vp, LFS_UNUSED_LBN, 0);
lfs_check(vp, LFS_UNUSED_LBN, 0);