dnode_block_freed
(db->db_level == 0 && (dnode_block_freed(dn, db->db_blkid) ||
if (level == 0 && dnode_block_freed(dn, blkid))
if (dr->dr_next != NULL || dnode_block_freed(dn, db->db_blkid))
dnode_block_freed(dn, 0)));
uint64_t dnode_block_freed(dnode_t *dn, uint64_t blkid);