diff -r c2e27e57d250 -r 0e07c0b5fb1c mercurial/revlog.py
--- a/mercurial/revlog.py	Fri Sep 06 16:31:35 2013 -0700
+++ b/mercurial/revlog.py	Sat Sep 07 12:42:46 2013 -0700
@@ -845,9 +845,11 @@
 
     def _chunkraw(self, startrev, endrev):
         start = self.start(startrev)
-        length = self.end(endrev) - start
+        end = self.end(endrev)
         if self._inline:
             start += (startrev + 1) * self._io.size
+            end += (endrev + 1) * self._io.size
+        length = end - start
         return self._getchunk(start, length)
 
     def _chunk(self, rev):