- * The @rcu_free_node_cb callback should internally wait for a grace
- * period before freeing the node.
+ * There should be no more concurrent add, delete, nor look-up performed
+ * on the Judy array while it is being destroyed (ensured by the caller).
+ * There is no need for the @rcu_free_node_cb callback to wait for grace
+ * periods, since there are no more concurrent users of the Judy array.