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.
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30多年前，在福建最贫困的闽东山区任职，习近平同志就明确强调：。关于这个话题，同城约会提供了深入分析
likely to use other means of moving money in most scenarios. Still, the bank