518 	struct hlist_node *next, **pprev;  member
524 #define INIT_HLIST_NODE(ptr) ((ptr)->next = NULL, (ptr)->pprev = NULL)
528 	return !h->pprev;  in hlist_unhashed()
539 	struct hlist_node **pprev = n->pprev;  in __hlist_del()  local
540 	*pprev = next;  in __hlist_del()
542 		next->pprev = pprev;  in __hlist_del()
549 	n->pprev = LIST_POISON2;  in hlist_del()
574 	n->pprev = LIST_POISON2;  in hlist_del_rcu()
579 	if (n->pprev)  {  in hlist_del_init()
592 		first->pprev = &n->next;  in hlist_add_head()
594 	n->pprev = &h->first;  in hlist_add_head()
622 	n->pprev = &h->first;  in hlist_add_head_rcu()
625 		first->pprev = &n->next;  in hlist_add_head_rcu()
633 	n->pprev = next->pprev;  in hlist_add_before()
635 	next->pprev = &n->next;  in hlist_add_before()
636 	*(n->pprev) = n;  in hlist_add_before()
644 	next->pprev = &n->next;  in hlist_add_after()
647 		next->next->pprev  = &next->next;  in hlist_add_after()