Re: cifs conversion to netfslib

[David Howells <dhowells@redhat.com>]

Hi Rohith, Steve,

I've updated my cifs-experimental branch.  What I have there seems to work
much the same as without the patches.

I've managed to run some xfstests on it.  I note that various xfstests fail,
even without my patches, and some of them seem quite slow, again even without
my patches.

Note that I'm comparing the speed to afs which does a lot of directory
management locally compared to other network filesystems, so I might be
comparing apples and oranges.  For example, I can run generic/013 on afs in
4-7s, whereas it's 3m-7m on cifs.  However, since /013 does a bunch of
directory ops, afs probably has an advantage by caching the entire dir
contents locally, thereby satisfying lookup and readdir from local cache and
using a bulk status fetch to stat files from a dir in batches of 50 or so.
This is probably worth further investigation at some point.

David