NFSv4.1: Ensure we use the correct credentials for bind_conn_to_session

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Weston Andros Adamson <dros@netapp.com>

fs/nfs/nfs4_fs.h

@@ -212,7 +212,7 @@ struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *,
 extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *);
 extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *);
 extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
-extern int nfs4_proc_bind_conn_to_session(struct nfs_client *);
+extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred);
 extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred);
 extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
 extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);

fs/nfs/nfs4proc.c

@@ -5105,7 +5105,7 @@ nfs41_same_server_scope(struct nfs41_server_scope *a,
  * The 4.1 client currently uses the same TCP connection for the
  * fore and backchannel.
  */
-int nfs4_proc_bind_conn_to_session(struct nfs_client *clp)
+int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred)
 {
 	int status;
 	struct nfs41_bind_conn_to_session_res res;
@@ -5114,6 +5114,7 @@ int nfs4_proc_bind_conn_to_session(struct nfs_client *clp)
 			&nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION],
 		.rpc_argp = clp,
 		.rpc_resp = &res,
+		.rpc_cred = cred,
 	};
 
 	dprintk("--> %s\n", __func__);

fs/nfs/nfs4state.c

@@ -1779,7 +1779,14 @@ static int nfs4_recall_slot(struct nfs_client *clp)
 
 static int nfs4_bind_conn_to_session(struct nfs_client *clp)
 {
-	return nfs4_proc_bind_conn_to_session(clp);
+	struct rpc_cred *cred;
+	int ret;
+
+	cred = nfs4_get_exchange_id_cred(clp);
+	ret = nfs4_proc_bind_conn_to_session(clp, cred);
+	if (cred)
+		put_rpccred(cred);
+	return ret;
 }
 #else /* CONFIG_NFS_V4_1 */
 static int nfs4_reset_session(struct nfs_client *clp) { return 0; }