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.
ВСУ запустили «Фламинго» вглубь России. В Москве заявили, что это британские ракеты с украинскими шильдиками16:45
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这22亿元，更像是李斌打出的又一个“缓兵之计”——蔚来的根本焦虑，是否因此有所改变？
據BBC中文取得的問卷，政府提出以現金或「樓換樓」方式回購業權，當中提及原址重建的年期或長達十年，並強調問卷屬初步收集意願，絕不代表居民承諾接受政府提供的選擇。