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
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