306             checkambig=True,

   306             checkambig=True,

   307             mmaplargeindex=True,

   307             mmaplargeindex=True,

   308             persistentnodemap=opener.options.get(b'persistent-nodemap', False),

   308             persistentnodemap=opener.options.get(b'persistent-nodemap', False),

   309             concurrencychecker=concurrencychecker,

   309             concurrencychecker=concurrencychecker,

   310             trypending=trypending,

   310             trypending=trypending,

   311         )

   312         )

   312 

   313 

   313         if self._initempty and (self._format_version == revlog.REVLOGV1):

   314         if self._initempty and (self._format_version == revlog.REVLOGV1):

   314             # changelogs don't benefit from generaldelta.

   315             # changelogs don't benefit from generaldelta.

   315 

   316 

   342             super(changelog, self)._write_docket(tr)

   343             super(changelog, self)._write_docket(tr)

   343 

   344 

   344     def delayupdate(self, tr):

   345     def delayupdate(self, tr):

   345         """delay visibility of index updates to other readers"""

   346         """delay visibility of index updates to other readers"""

   346         assert not self._inner.is_open

   347         assert not self._inner.is_open

   347         if self._docket is not None:

   353         if self._docket is not None:

   348             self._v2_delayed = True

   354             self._v2_delayed = True

   349         else:

   355         else:

   350             new_index = self._inner.delay()

   356             new_index = self._inner.delay()

   351             if new_index is not None:

   357             if new_index is not None: