--- a/mercurial/revlog.py	Sun Jul 25 10:05:38 2010 +0900
+++ b/mercurial/revlog.py	Sun Jul 25 13:10:57 2010 +0200
@@ -1193,14 +1193,7 @@
                 d = self.revdiff(a, b)
             yield changegroup.chunkheader(len(meta) + len(d))
             yield meta
-            if len(d) > 2**20:
-                pos = 0
-                while pos < len(d):
-                    pos2 = pos + 2 ** 18
-                    yield d[pos:pos2]
-                    pos = pos2
-            else:
-                yield d
+            yield d
 
         yield changegroup.closechunk()