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SubjectRe: Finegrained a/c/mtime was Re: Directory notification problem
> >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)?


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