页面淘汰算法采用LRU页面淘汰算法，并且在淘汰一页时，只将该页在页表中修改状态位。而不再判断它是否被改写过，也不将它写回到辅存。-pages out of LRU algorithm out pages algorithm, and in an out, only to the page in the page table to amend the state spaces. Rather than judge whether it be redrafted, it was not to ret