[PATCH] nfsd4: fix fh_expire_type

After discussion at the recent NFSv4 bake-a-thon, I realized that my
assumption that NFS4_FH_PERSISTENT required filehandles to persist was a
misreading of the spec.  This also fixes an interoperability problem with the
Solaris client.
Signed-off-by: NJ. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: NNeil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

fs/nfsd/nfs4xdr.c

@@ -1366,9 +1366,9 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
 		if ((buflen -= 4) < 0)
 			goto out_resource;
 		if (exp->ex_flags & NFSEXP_NOSUBTREECHECK)
-			WRITE32(NFS4_FH_VOLATILE_ANY);
+			WRITE32(NFS4_FH_PERSISTENT);
 		else
-			WRITE32(NFS4_FH_VOLATILE_ANY|NFS4_FH_VOL_RENAME);
+			WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME);
 	}
 	if (bmval0 & FATTR4_WORD0_CHANGE) {
 		/*