diff -r c9849bec227a -r b62d13506860 mercurial/vfs.py
--- a/mercurial/vfs.py	Fri Jun 30 03:46:01 2017 +0200
+++ b/mercurial/vfs.py	Wed Jul 05 00:01:30 2017 +0200
@@ -547,8 +547,6 @@
         if expectedcount > 0 and expectedcount < minfilecount:
             return
 
-        # Windows defaults to a limit of 512 open files. A buffer of 128
-        # should give us enough headway.
         maxqueue = ui.configint('worker', 'backgroundclosemaxqueue')
         threadcount = ui.configint('worker', 'backgroundclosethreadcount')