Update UPDATING document on how to build AVFS

diff --git a/docs/UPDATING b/docs/UPDATING
index b62a68b852b792d2eb75fef7346f80ecd63ee01c..975cd4d2f63b2cd1317e65555f120bc25405d77c 100644 (file)
--- a/docs/UPDATING
+++ b/docs/UPDATING
@@ -1,3 +1,13 @@
+20110817:
+       To use the new asynchronous version of VFS do:
+       # BUILDAVFS=yes make cleandepend world
+
+       To switch back to the normal VFS do:
+       # make cleandepend world
+
+       By default the old VFS and PFS are built and included in the boot
+       image. AVFS is a work in progress and not yet mature. Use at your own
+       risk.
 20110722:
        To install the new mkdep:
        # cp /usr/bin/mkdep /usr/bin/ackmkdep