28 			tail = &a->next;  in merge()
29 			a = a->next;  in merge()
36 			tail = &b->next;  in merge()
37 			b = b->next;  in merge()
64 			tail->next = a;  in merge_final()
67 			a = a->next;  in merge_final()
71 			tail->next = b;  in merge_final()
74 			b = b->next;  in merge_final()
83 	tail->next = b;  in merge_final()
96 		b = b->next;  in merge_final()
100 	tail->next = head;  in merge_final()
192 	struct list_head *list = head->next, *pending = NULL;  in list_sort()
199 	head->prev->next = NULL;  in list_sort()
239 		list = list->next;  in list_sort()
240 		pending->next = NULL;  in list_sort()
248 		struct list_head *next = pending->prev;  in list_sort()  local
250 		if (!next)  in list_sort()
253 		pending = next;  in list_sort()