25 	struct list_head head, *tail = &head;  in merge()  local
30 			tail->next = a;  in merge()
33 			tail->next = b;  in merge()
36 		tail = tail->next;  in merge()
38 	tail->next = a?:b;  in merge()
55 	struct list_head *tail = head;  in merge_and_restore_back_links()  local
60 			tail->next = a;  in merge_and_restore_back_links()
61 			a->prev = tail;  in merge_and_restore_back_links()
64 			tail->next = b;  in merge_and_restore_back_links()
65 			b->prev = tail;  in merge_and_restore_back_links()
68 		tail = tail->next;  in merge_and_restore_back_links()
70 	tail->next = a ? : b;  in merge_and_restore_back_links()
79 		(*cmp)(priv, tail->next, tail->next);  in merge_and_restore_back_links()
81 		tail->next->prev = tail;  in merge_and_restore_back_links()
82 		tail = tail->next;  in merge_and_restore_back_links()
83 	} while (tail->next);  in merge_and_restore_back_links()
85 	tail->next = head;  in merge_and_restore_back_links()
86 	head->prev = tail;  in merge_and_restore_back_links()