Dealing with negative dentries

>I don't love the idea of timing operations to determine whether something is local or remote: ideally we should provide an API to provide the required info and then try to make every operation fast enough to appear as if it's local :P

They don't care about whether the directory is local or remote, exactly - they care about whether it's fast or slow. In principle, you could have a really fast network filesystem, and then NSS wouldn't bother with the workaround.

>But I suppose craziness is in the eye of the beholder :)

Haha, exactly.

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By the way, thanks for hosting this session, and posting the initial patch. I thought it was a really smart and fast heuristic.