证监会：持续增强市场内在稳定性，讲好“股市叙事”
Please, please, please stop using passkeys for encrypting user dataFebruary 27, 2026·670 words·4 mins
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Mat Smith for Engadget
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.