The A/D bits exist entirely for the operating system's benefit. The Accessed bit tells the OS which pages have been recently used, enabling page replacement algorithms to choose pages to evict when memory runs low. The Dirty bit tells the OS which pages have been modified and must be written back to disk before eviction; clean pages can simply be discarded and re-read from disk later.
为了保证公平，我没有使用模板，仅提供了内容基础和提示词。
正定经济如何起飞？上世纪80年代，习近平同志思考：需要找到一条新路。。同城约会对此有专业解读
В Финляндии предупредили об опасном шаге ЕС против России09:28
。业内人士推荐雷电模拟器官方版本下载作为进阶阅读
Израиль нанес удар по Ирану09:28，这一点在91视频中也有详细论述
Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00584-y