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.
而这种“消失”并非偶然，而是一场持续数年的缓慢退潮。
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В Финляндии предупредили об опасном шаге ЕС против России09:28，详情可参考safew官方下载
Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00446-7
8 days agoShareSave。关于这个话题，heLLoword翻译官方下载提供了深入分析