svn commit: r302152 - head

[Brooks Davis]

Author: brooks
Date: Thu Jun 23 21:02:05 2016
New Revision: 302152
URL: https://svnweb.freebsd.org/changeset/base/302152

Log:
  Add an UPDATING entry for the pipe() -> pipe2() transition.
  
  Approved by:	re (gjb)
  Sponsored by:	DARPA, AFRL

Modified:
  head/UPDATING

Modified: head/UPDATING
==============================================================================
--- head/UPDATING	Thu Jun 23 20:59:13 2016	(r302151)
+++ head/UPDATING	Thu Jun 23 21:02:05 2016	(r302152)
@@ -31,6 +31,14 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11
 	disable the most expensive debugging functionality run
 	"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
 
+20160622:
+	The the libc stub for the pipe(2) system call has been replaced with
+	a wrapper which calls the pipe2(2) system call and the pipe(2) is now
+	only implemented by the kernels which include "options
+	FREEBSD10_COMPAT" in their config file (this is the default).
+	Users should ensure that this option is enabled in their kernel
+	or upgrade userspace to r302092 before upgrading their kernel.
+
 20160527:
 	CAM will now strip leading spaces from SCSI disks' serial numbers.
 	This will effect users who create UFS filesystems on SCSI disks using