--- a/mercurial/revlog.py	Sun Sep 27 16:08:18 2015 -0700
+++ b/mercurial/revlog.py	Sat Sep 26 21:43:13 2015 -0700
@@ -1433,7 +1433,6 @@
             if data[0]:
                 dfh.write(data[0])
             dfh.write(data[1])
-            dfh.flush()
             ifh.write(entry)
         else:
             offset += curr * self._io.size