diff --git a/mercurial/revlog.py b/mercurial/revlog.py
--- a/mercurial/revlog.py
+++ b/mercurial/revlog.py
@@ -2000,12 +2000,11 @@
         ):
             return
 
-        trinfo = tr.find(self.indexfile)
-        if trinfo is None:
+        troffset = tr.findoffset(self.indexfile)
+        if troffset is None:
             raise error.RevlogError(
                 _(b"%s not found in the transaction") % self.indexfile
             )
-        troffset = trinfo[1]
         trindex = 0
         tr.add(self.datafile, 0)
 
diff --git a/mercurial/transaction.py b/mercurial/transaction.py
--- a/mercurial/transaction.py
+++ b/mercurial/transaction.py
@@ -395,11 +395,9 @@
         return any
 
     @active
-    def find(self, file):
+    def findoffset(self, file):
         if file in self._map:
-            return self._entries[self._map[file]]
-        if file in self._backupmap:
-            return self._backupentries[self._backupmap[file]]
+            return self._entries[self._map[file]][1]
         return None
 
     @active