hlist_for_each_entry_rcu — iterate over rcu list of given type
the type * to use as a loop cursor.
the struct hlist_node to use as a loop cursor.
the head for your list.
the name of the hlist_node within the struct.
This list-traversal primitive may safely run concurrently with the _rcu list-mutation primitives such as hlist_add_head_rcu as long as the traversal is guarded by rcu_read_lock.