[PATCH] knfsd: return EACCES instead of ESTALE for certain filehandle lookup failures

As 'nfs_acceptable' uses the authnetication user in it's checks, the
filehandle might not be truely "stale" - EACCES is safer.

Thanks Olaf Kirch <okir@suse.de> and others.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/exportfs/expfs.c

@@ -283,7 +283,12 @@ find_exported_dentry(struct super_block *sb, void *obj, void *parent,
 
 	/* drat - I just cannot find anything acceptable */
 	dput(result);
-	return ERR_PTR(-ESTALE);
+	/* It might be justifiable to return ESTALE here,
+	 * but the filehandle at-least looks reasonable good
+	 * and it just be a permission problem, so returning
+	 * -EACCESS is safer
+	 */
+	return ERR_PTR(-EACCES);
 
  err_target:
 	dput(target_dir);