FSCK_NODE_FLAG_PAR_NOT_FOUND
node->fsck_flags |= FSCK_NODE_FLAG_PAR_NOT_FOUND;
node->fsck_flags &= ~FSCK_NODE_FLAG_PAR_NOT_FOUND;
parent_missing = (node->fsck_flags & FSCK_NODE_FLAG_PAR_NOT_FOUND)? 1:0;