> information fully (like "readdir_long" on NFSv3, I think, and
> some other filesystems that just make directories be a list of
> inodes directly), then you can just fill in the full inode
> information directly and not play games with revalidate.
> Oh. And a final comment - I really don't think the above is
> necessarily a good idea. A lot of applications do more
> readdir() calls than they ever do lookups, and you might make
> readdir() slower by doing the dentry allocation with not enough
> gain at lookup time.
Indeed. The latter is the main problem with NFSv3's READDIRPLUS. It's
really only useful in the case when you're doing a 'find', but slows
things down considerably in all other cases. I'm still looking for a
good heuristic before re-enabling it in the current NFSv3 client
patches.
Cheers,
Trond
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