extern void plist_add(struct plist_node *node, struct plist_head *head);
extern void plist_del(struct plist_node *node, struct plist_head *head);
+extern void plist_requeue(struct plist_node *node, struct plist_head *head);
+
/**
* plist_for_each - iterate over the plist
* @pos: the type * to use as a loop counter