rfs4_findclient_by_id
cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE);
if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) {
cp = rfs4_findclient_by_id(owner->clientid, FALSE);
cp = rfs4_findclient_by_id(args->clientid, TRUE);
if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE))
cp = rfs4_findclient_by_id(args->dca_clientid, TRUE);
cp = rfs4_findclient_by_id(args->csa_clientid, TRUE);
extern rfs4_client_t *rfs4_findclient_by_id(clientid4, bool_t);