tree e8ff891bc68ee10ebe3d067b13ba31e2deb645bb
parent 86d61d8638ddf9cdf87df26c7fa69b2804425fbe
author Chuck Lever <chuck.lever@oracle.com> 1200089384 -0500
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1201676766 -0500

NLM: Introduce external nlm_host set-up and tear-down functions

We would like to remove the per-lock-operation nlm_lookup_host() call from
nlmclnt_proc().

The new architecture pins an nlm_host structure to each NFS client
superblock that has the "lock" mount option set.  The NFS client passes
in the pinned nlm_host structure during each call to nlmclnt_proc().  NFS
client unmount processing "puts" the nlm_host so it can be garbage-
collected later.

This patch introduces externally callable NLM functions that handle
mount-time nlm_host set up and tear-down.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>