NFS: Ensure NFSv2/v3 mounts respect the NFS_MOUNT_SECFLAVOUR flag

Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/super.c

@@ -471,12 +471,14 @@ static int nfs_validate_mount_data(struct nfs_mount_data *data,
 						data->version);
 				return -EINVAL;
 			}
-			/* Fill in pseudoflavor for mount version < 5 */
-			data->pseudoflavor = RPC_AUTH_UNIX;
 		case 5:
 			memset(data->context, 0, sizeof(data->context));
 	}
 
+	/* Set the pseudoflavor */
+	if (!(data->flags & NFS_MOUNT_SECFLAVOUR))
+		data->pseudoflavor = RPC_AUTH_UNIX;
+
 #ifndef CONFIG_NFS_V3
 	/* If NFSv3 is not compiled in, return -EPROTONOSUPPORT */
 	if (data->flags & NFS_MOUNT_VER3) {