directory delegations

["Bradley C. Kuszmaul" <bradley.kuszmaul@xxxxxxxxxx>]

Hi, I'm the architect for Oracle's File Storage Service.   FSS is 
basically a big scalable NFS server that runs in Oracle's cloud.

Our metadata operations have higher latency than a vanilla NFS server 
(e.g., a Linux NFS server serving a XFS stored on a block device), and 
we suspect that directory delegations would make a big performance 
improvement.

I understand, however, that essentially no one implements directory 
delegations.

Can anyone fill me in on the current thinking of the future of support 
for directory delegations in the Linux NFS client?

-Bradley