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Andi Kleen wrote: >>>Another advantage of using the real time instead of a counter is that >>>you can easily merge the both values into a single 64bit value and do >>>arithmetic on it in user space. With a generation counter you would need >>>to work with number pairs, which is much more complex. >>> >>?? >>if (file->mtime != mtime || file->gen_count != gen_count) >> file_changed=1; >> > >And how would you implement "newer than" and "older than" with a generation >count that doesn't reset in a always fixed time interval (=requiring >additional timestamps in kernel)? > >-Andi > Well IMHO "newer than", "older than" applications have until now done with second resolution, and that's all that's required? Padraig. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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