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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，推荐阅读爱思助手下载最新版本获取更多信息
这类并购之所以相对成功，在于潍柴背后有完整的发动机与动力系统产业链支撑，而不是单纯的财务投资冲动。，更多细节参见旺商聊官方下载
For many developers, the point isn’t to see these massive projects in a finished state but to complete the next task and hopefully bring the team closer to the next release.。同城约会对此有专业解读
[cal]: https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202520260AB1043