533     struct list_head *list = head->next, *pending = NULL;  in list_sort()  local
562         struct list_head **tail = &pending;  in list_sort()
578         list->prev = pending;  in list_sort()
579         pending = list;  in list_sort()
581         pending->next = NULL;  in list_sort()
586     list = pending;  in list_sort()
587     pending = pending->prev;  in list_sort()
589         struct list_head *next = pending->prev;  in list_sort()
593         list = merge(priv, cmp, pending, list);  in list_sort()
594         pending = next;  in list_sort()
597     merge_final(priv, cmp, head, pending, list);  in list_sort()