mercurial/configitems.py

--- a/mercurial/configitems.py	Fri Jun 30 03:45:58 2017 +0200
+++ b/mercurial/configitems.py	Fri Jun 30 03:45:59 2017 +0200
@@ -158,3 +158,6 @@
 coreconfigitem('worker', 'backgroundclosemaxqueue',
     default=384,
 )
+coreconfigitem('worker', 'backgroundcloseminfilecount',
+    default=2048,
+)