nfsd: export proper maximum file size to the client

I noticed that we export a way to high value for the maxfilesize attribute when debugging a client issue. The issue didn't turn out to be related to it, but I think we should export it, so that clients can limit what write sizes they accept before hitting the server. Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
AnTAVR · Nov 14, 2013 · aea240f · aea240f
1 parent 6ff40de
commit aea240f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
@@ -2391,7 +2391,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
 	if (bmval0 & FATTR4_WORD0_MAXFILESIZE) {
 		if ((buflen -= 8) < 0)
 			goto out_resource;
-		WRITE64(~(u64)0);
+		WRITE64(exp->ex_path.mnt->mnt_sb->s_maxbytes);
 	}
 	if (bmval0 & FATTR4_WORD0_MAXLINK) {
 		if ((buflen -= 4) < 0)