nlmsvc_cancel_blocked
resp->status = nlmsvc_cancel_blocked(SVC_NET(rqstp), file, &argp->lock);
nlmsvc_cancel_blocked(net, file, lock);
resp->status = cast_status(nlmsvc_cancel_blocked(net, file, &argp->lock));
__be32 nlmsvc_cancel_blocked(struct net *net, struct nlm_file *, struct nlm_lock *);