void class_handle_hash(struct portals_handle *,
struct portals_handle_ops *ops);
void class_handle_unhash(struct portals_handle *);
-void class_handle_hash_back(struct portals_handle *);
void *class_handle2object(__u64 cookie, const void *owner);
void class_handle_free_cb(struct rcu_head *rcu);
int class_handle_init(void);