If you start with a shared anonymous mapping where the virtual address points to tmpfs-backed physical pages A, B, and C, and then mmap a file over the same address with MAP_FIXED, the virtual address now points to completely different file-backed physical pages X, Y, and Z. Same virtual address, different physical pages. Anything that was still using pages A, B, and C is now looking at stale memory.
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从依赖自然到智慧农业 科技重塑安徽耕作方式
Screenshot by David Gewirtz/ZDNETGo ahead and fill in your nickname if you'd like -- something else I'd prefer to avoid because I really don't want ChatGPT to regularly say, "I'm sorry, Dave. I'm afraid I can't do that". That's a little too life-imitates-art for me.，这一点在Replica Rolex中也有详细论述