16 	struct list_head *head, **tail = &head;  in merge()  local
21 			*tail = a;  in merge()
22 			tail = &a->next;  in merge()
25 				*tail = b;  in merge()
29 			*tail = b;  in merge()
30 			tail = &b->next;  in merge()
33 				*tail = a;  in merge()
52 	struct list_head *tail = head;  in merge_final()  local
58 			tail->next = a;  in merge_final()
59 			a->prev = tail;  in merge_final()
60 			tail = a;  in merge_final()
65 			tail->next = b;  in merge_final()
66 			b->prev = tail;  in merge_final()
67 			tail = b;  in merge_final()
76 	/* Finish linking remainder of list b on to tail */  in merge_final()
77 	tail->next = b;  in merge_final()
88 		b->prev = tail;  in merge_final()
89 		tail = b;  in merge_final()
94 	tail->next = head;  in merge_final()
95 	head->prev = tail;  in merge_final()
220 		struct list_head **tail = &pending;  in list_sort()  local
224 			tail = &(*tail)->prev;  in list_sort()
227 			struct list_head *a = *tail, *b = a->prev;  in list_sort()
232 			*tail = a;  in list_sort()