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