diff --git a/hgext3rd/lfs/wrapper.py b/hgext3rd/lfs/wrapper.py
--- a/hgext3rd/lfs/wrapper.py
+++ b/hgext3rd/lfs/wrapper.py
@@ -23,6 +23,14 @@
     pointer,
 )
 
+if util.safehasattr(revlog, 'parsemeta'):
+    # Since 0596d274
+    _parsemeta = revlog.parsemeta
+    _packmeta = revlog.packmeta
+else:
+    _parsemeta = filelog.parsemeta
+    _packmeta = filelog.packmeta
+
 def supportedoutgoingversions(orig, repo):
     versions = orig(repo)
     versions.discard('01')
@@ -60,13 +68,13 @@
             name = k[len('x-hg-'):]
             hgmeta[name] = p[k]
     if hgmeta or text.startswith('\1\n'):
-        text = filelog.packmeta(hgmeta, text)
+        text = _packmeta(hgmeta, text)
 
     return (text, True)
 
 def writetostore(self, text):
     # hg filelog metadata (includes rename, etc)
-    hgmeta, offset = filelog.parsemeta(text)
+    hgmeta, offset = _parsemeta(text)
     if offset and offset > 0:
         # lfs blob does not contain hg filelog metadata
         text = text[offset:]
@@ -113,7 +121,7 @@
     threshold = self.opener.options['lfsthreshold']
     textlen = len(text)
     # exclude hg rename meta from file size
-    meta, offset = filelog.parsemeta(text)
+    meta, offset = _parsemeta(text)
     if offset:
         textlen -= offset
 
diff --git a/remotefilelog/remotefilelog.py b/remotefilelog/remotefilelog.py
--- a/remotefilelog/remotefilelog.py
+++ b/remotefilelog/remotefilelog.py
@@ -14,9 +14,15 @@
 )
 import collections, os
 from mercurial.node import bin, nullid
-from mercurial import filelog, revlog, mdiff, ancestor, error
+from mercurial import filelog, revlog, mdiff, ancestor, error, util
 from mercurial.i18n import _
 
+if util.safehasattr(revlog, 'parsemeta'):
+    # Since 0596d274
+    _parsemeta = revlog.parsemeta
+else:
+    _parsemeta = filelog.parsemeta
+
 class remotefilelognodemap(object):
     def __init__(self, filename, store):
         self._filename = filename
@@ -116,7 +122,7 @@
         if node is None:
             node = revlog.hash(text, p1, p2)
 
-        meta, metaoffset = filelog.parsemeta(text)
+        meta, metaoffset = _parsemeta(text)
         rawtext, validatehash = self._processflags(text, flags, 'write')
         return self.addrawrevision(rawtext, transaction, linknode, p1, p2,
                                    node, flags, cachedelta,
@@ -136,8 +142,8 @@
             # metadata or not (flag processor could replace it), so we just
             # parse it as best-effort.
             # in LFS (flags != 0)'s case, the best way is to call LFS code to
-            # get the meta information, instead of filelog.parsemeta.
-            meta, metaoffset = filelog.parsemeta(rawtext)
+            # get the meta information, instead of _parsemeta.
+            meta, metaoffset = _parsemeta(rawtext)
         if flags != 0:
             # when flags != 0, be conservative and do not mangle rawtext, since
             # a read flag processor expects the text not being mangled at all.
diff --git a/remotefilelog/shallowutil.py b/remotefilelog/shallowutil.py
--- a/remotefilelog/shallowutil.py
+++ b/remotefilelog/shallowutil.py
@@ -14,6 +14,14 @@
 
 from . import constants
 
+if util.safehasattr(revlog, 'parsemeta'):
+    # Since 0596d274
+    _parsemeta = revlog.parsemeta
+    _packmeta = revlog.packmeta
+else:
+    _parsemeta = filelog.parsemeta
+    _packmeta = filelog.packmeta
+
 if os.name != 'nt':
     import grp
 
@@ -83,13 +91,13 @@
         if copyfrom:
             meta['copy'] = copyfrom
             meta['copyrev'] = copyrev
-        text = filelog.packmeta(meta, text)
+        text = _packmeta(meta, text)
 
     return text
 
 def parsemeta(text):
     """parse mercurial filelog metadata"""
-    meta, size = filelog.parsemeta(text)
+    meta, size = _parsemeta(text)
     if text.startswith('\1\n'):
         s = text.index('\1\n', 2)
         text = text[s + 2:]