btree_lookup
return btree_lookup(&head->h, &btree_geo128, (unsigned long *)&key);
return btree_lookup(&head->h, BTREE_TYPE_GEO, &_key);
return btree_lookup(&head->h, BTREE_TYPE_GEO, (unsigned long *)&key);
void *btree_lookup(struct btree_head *head, struct btree_geo *geo,
EXPORT_SYMBOL_GPL(btree_lookup);