nfsd: remove unused set_client argument

Every caller is setting this argument to false, so we don't need it.

Also cut this comment a bit and remove an unnecessary warning.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

fs/nfsd/nfs4state.c

@@ -4648,8 +4648,7 @@ static struct nfs4_client *lookup_clientid(clientid_t *clid, bool sessions,
 
 static __be32 set_client(clientid_t *clid,
 		struct nfsd4_compound_state *cstate,
-		struct nfsd_net *nn,
-		bool sessions)
+		struct nfsd_net *nn)
 {
 	if (cstate->clp) {
 		if (!same_clid(&cstate->clp->cl_clientid, clid))
@@ -4659,12 +4658,10 @@ static __be32 set_client(clientid_t *clid,
 	if (STALE_CLIENTID(clid, nn))
 		return nfserr_stale_clientid;
 	/*
-	 * For v4.1+ we get the client in the SEQUENCE op. If we don't have one
-	 * cached already then we know this is for is for v4.0 and "sessions"
-	 * will be false.
+	 * We're in the 4.0 case (otherwise the SEQUENCE op would have
+	 * set cstate->clp), so session = false:
 	 */
-	WARN_ON_ONCE(cstate->session);
-	cstate->clp = lookup_clientid(clid, sessions, nn);
+	cstate->clp = lookup_clientid(clid, false, nn);
 	if (!cstate->clp)
 		return nfserr_expired;
 	return nfs_ok;
@@ -4688,7 +4685,7 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
 	if (open->op_file == NULL)
 		return nfserr_jukebox;
 
-	status = set_client(clientid, cstate, nn, false);
+	status = set_client(clientid, cstate, nn);
 	if (status)
 		return status;
 	clp = cstate->clp;
@@ -5298,7 +5295,7 @@ nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
 
 	trace_nfsd_clid_renew(clid);
-	status = set_client(clid, cstate, nn, false);
+	status = set_client(clid, cstate, nn);
 	if (status)
 		return status;
 	clp = cstate->clp;
@@ -5681,7 +5678,7 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
 	if (ZERO_STATEID(stateid) || ONE_STATEID(stateid) ||
 		CLOSE_STATEID(stateid))
 		return nfserr_bad_stateid;
-	status = set_client(&stateid->si_opaque.so_clid, cstate, nn, false);
+	status = set_client(&stateid->si_opaque.so_clid, cstate, nn);
 	if (status == nfserr_stale_clientid) {
 		if (cstate->session)
 			return nfserr_bad_stateid;
@@ -6905,7 +6902,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		 return nfserr_inval;
 
 	if (!nfsd4_has_session(cstate)) {
-		status = set_client(&lockt->lt_clientid, cstate, nn, false);
+		status = set_client(&lockt->lt_clientid, cstate, nn);
 		if (status)
 			goto out;
 	}
@@ -7089,7 +7086,7 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
 	dprintk("nfsd4_release_lockowner clientid: (%08x/%08x):\n",
 		clid->cl_boot, clid->cl_id);
 
-	status = set_client(clid, cstate, nn, false);
+	status = set_client(clid, cstate, nn);
 	if (status)
 		return status;
 
@@ -7236,7 +7233,7 @@ nfs4_check_open_reclaim(clientid_t *clid,
 	__be32 status;
 
 	/* find clientid in conf_id_hashtbl */
-	status = set_client(clid, cstate, nn, false);
+	status = set_client(clid, cstate, nn);
 	if (status)
 		return nfserr_reclaim_bad;