# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 2023-09-25 14:36:17
# Node ID aed91a4421b84532305e14c97eaf8f161c0a4450
# Parent  812cd3dfa4cbf6d275802e13f774af6bd3f9ed48

repo-upgrade: keep the revlog open while cloning

This is more explicit.  No performance differences were observed.

diff --git a/mercurial/revlog.py b/mercurial/revlog.py
--- a/mercurial/revlog.py
+++ b/mercurial/revlog.py
@@ -3218,14 +3218,15 @@ class revlog:
 
             destrevlog._deltabothparents = forcedeltabothparents or oldamd
 
-            self._clone(
-                tr,
-                destrevlog,
-                addrevisioncb,
-                deltareuse,
-                forcedeltabothparents,
-                sidedata_helpers,
-            )
+            with self.reading():
+                self._clone(
+                    tr,
+                    destrevlog,
+                    addrevisioncb,
+                    deltareuse,
+                    forcedeltabothparents,
+                    sidedata_helpers,
+                )
 
         finally:
             destrevlog._lazydelta = oldlazydelta