nlm_do_unlock
extern int nlm_do_unlock(nlm4_unlockargs *argp, nlm4_res *result,
if (nlm_do_unlock(&args4, &res4, rqstp, &rpc))
nlm_do_unlock(argp, result, rqstp, NULL);
if (nlm_do_unlock(argp, &res4, rqstp, &rpc))