[NFS-Ganesha-Devel] file size and getattr

What is the file size returned by the NFS server for getattr after an unstable write to the NFS client that did the write or to other NFS clients. As far as I know most file systems will always return the file size that includes the unstable writes. Does the NFSv4 spec allows the server to return file size that doesn't include the unstable write to the writer or any other NFS client? Marc.