get_user_pages() also honors copy-on-write (CoW) semantics. If a write is detected to a non-writable page table entry, an “page fault” is emulated by calling handle_mm_fault, the core page fault handler. This triggers the appropriate CoW handling routine via do_wp_page, which copies the page if necessary. This ensures that writes via /proc/*/mem are only visible within the process if they occur to a privately shared mapping, such as libc.
周边和平稳定得以维护的一个关键因素，是中国一以贯之地坚持睦邻安邻富邻政策，践行亲诚惠容、命运与共理念，倡导开放的区域主义、真正的多边主义。试想，如果中国也像某些传统大国那样，热衷在周边划分势力范围，挑动阵营对立，甚至以邻为壑，亚洲的局面还会像今天这样稳定吗？国际社会还能分享亚洲的发展机遇吗？事实证明，中国始终是地区安全的稳定锚、发展繁荣的发动机、亚洲共同价值的践行者。我们很欣慰能发挥这样的作用，今后也愿为此作出更大的努力。
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