mercurial/revlogutils/nodemap.py

--- a/mercurial/revlogutils/nodemap.py	Mon May 03 12:22:06 2021 +0200
+++ b/mercurial/revlogutils/nodemap.py	Mon May 03 12:22:16 2021 +0200
@@ -149,7 +149,7 @@
     if revlog.nodemap_file is None:
         if force:
             revlog.nodemap_file = get_nodemap_file(
-                revlog.opener, revlog.indexfile
+                revlog.opener, revlog._indexfile
             )
         else:
             msg = "calling persist nodemap on a revlog without the feature enabled"