nfsrpc_lock
int nfsrpc_lock(struct nfsrv_descript *, struct nfsmount *, vnode_t,
error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh,
error = nfsrpc_lock(nd, nmp, vp, fhp, fhlen, nlp, newone,
error = nfsrpc_lock(nd, nmp, vp, fhp, fhlen, nlp,