diff --git a/UPDATING b/UPDATING
index cea037537e8e..14a352aa062c 100644
--- a/UPDATING
+++ b/UPDATING
@@ -24,6 +24,11 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 10.x IS SLOW:
 	disable the most expensive debugging functionality run
 	"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
 
+20121018:
+	All the non-MPSAFE filesystems have been disconnected from
+	the build. The full list includes: codafs, hpfs, ntfs, nwfs,
+	portalfs, smbfs, xfs.
+
 20121016:
 	The interface cloning API and ABI has changed. The following
 	modules need to be recompiled together with kernel: