diff -r cd443c7589cc -r 2efdd186925d mercurial/store.py
--- a/mercurial/store.py	Mon Mar 24 15:42:13 2014 -0700
+++ b/mercurial/store.py	Mon Mar 24 15:35:07 2014 -0700
@@ -340,6 +340,9 @@
     def write(self, tr):
         pass
 
+    def invalidatecaches(self):
+        pass
+
     def __contains__(self, path):
         '''Checks if the store contains path'''
         path = "/".join(("data", path))
@@ -489,6 +492,9 @@
     def write(self, tr):
         self.fncache.write(tr)
 
+    def invalidatecaches(self):
+        self.fncache.entries = None
+
     def _exists(self, f):
         ef = self.encode(f)
         try: