diff --git a/hgext/lfs/wrapper.py b/hgext/lfs/wrapper.py
--- a/hgext/lfs/wrapper.py
+++ b/hgext/lfs/wrapper.py
@@ -136,7 +136,7 @@
         if offset:
             textlen -= offset
 
-        if lfstrack(self.filename, textlen):
+        if lfstrack(self._revlog.filename, textlen):
             flags |= revlog.REVIDX_EXTSTORED
 
     return orig(self, text, transaction, link, p1, p2, cachedelta=cachedelta,
diff --git a/mercurial/filelog.py b/mercurial/filelog.py
--- a/mercurial/filelog.py
+++ b/mercurial/filelog.py
@@ -24,7 +24,7 @@
                                      censorable=True)
         # Full name of the user visible file, relative to the repository root.
         # Used by LFS.
-        self.filename = path
+        self._revlog.filename = path
         # Used by repo upgrade.
         self.index = self._revlog.index
         # Used by changegroup generation.
@@ -189,15 +189,6 @@
     # TODO these aren't part of the interface and aren't internal methods.
     # Callers should be fixed to not use them.
 
-    # Used by LFS.
-    @property
-    def filename(self):
-        return self._revlog.filename
-
-    @filename.setter
-    def filename(self, value):
-        self._revlog.filename = value
-
     # Used by bundlefilelog, unionfilelog.
     @property
     def indexfile(self):