548 	struct hlist_node *next, **pprev;  member
557 	h->pprev = NULL;  in INIT_HLIST_NODE()
562 	return !h->pprev;  in hlist_unhashed()
573 	struct hlist_node **pprev = n->pprev;  in __hlist_del()  local
574 	*pprev = next;  in __hlist_del()
576 		next->pprev = pprev;  in __hlist_del()
583 	n->pprev = LIST_POISON2;  in hlist_del()
599 		first->pprev = &n->next;  in hlist_add_head()
601 	n->pprev = &h->first;  in hlist_add_head()
608 	n->pprev = next->pprev;  in hlist_add_before()
610 	next->pprev = &n->next;  in hlist_add_before()
611 	*(n->pprev) = n;  in hlist_add_before()
619 	next->pprev = &n->next;  in hlist_add_after()
622 		next->next->pprev  = &next->next;  in hlist_add_after()