hash_delete
if ((junk = hash_delete(&bc.ht, ce->dev, ce->block_num)) != ce) {
if ((junk = hash_delete(&bc.ht, ce->dev, ce->block_num)) != ce) {
tmp_ce = (cache_ent *)hash_delete(&bc.ht,dev,bnum+cur);
tmp_ce = (cache_ent *)hash_delete(&bc.ht,ents[cur]->dev,
tmp_ce = hash_delete(&bc.ht, ce->dev, ce->block_num);
tmp_ce = (cache_ent *)hash_delete(&bc.ht,dev,bnum+cur);