diff -r d121823072b8 -r e4ac7e63c213 mercurial/manifest.py
--- a/mercurial/manifest.py	Fri Mar 15 15:07:43 2019 +0000
+++ b/mercurial/manifest.py	Thu Mar 14 00:40:11 2019 +0000
@@ -1438,7 +1438,7 @@
         if not util.safehasattr(repo, '_wlockref'):
             return
 
-        self._fulltextcache._opener = repo.cachevfs
+        self._fulltextcache._opener = repo.wcachevfs
         if repo._currentlock(repo._wlockref) is None:
             return