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Date:      Fri, 4 Mar 2016 17:43:00 +0000 (UTC)
From:      John Baldwin <jhb@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r296389 - head
Message-ID:  <201603041743.u24Hh0UT064495@repo.freebsd.org>

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Author: jhb
Date: Fri Mar  4 17:42:59 2016
New Revision: 296389
URL: https://svnweb.freebsd.org/changeset/base/296389

Log:
  Add an UPDATING entry for the recent AIO changes.
  
  Suggested by:	maxim

Modified:
  head/UPDATING

Modified: head/UPDATING
==============================================================================
--- head/UPDATING	Fri Mar  4 17:24:28 2016	(r296388)
+++ head/UPDATING	Fri Mar  4 17:42:59 2016	(r296389)
@@ -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".)
 
+20160301:
+	The AIO subsystem is now a standard part of the kernel.  The
+	VFS_AIO kernel option and aio.ko kernel module have been removed.
+	Due to stability concerns, asynchronous I/O requests are only
+	permitted on sockets and raw disks by default.  To enable
+	asynchronous I/O requests on all file types, set the
+	vfs.aio.enable_unsafe sysctl to a non-zero value.
+
 20160226:
 	The ELF object manipulation tool objcopy is now provided by the
 	ELF Tool Chain project rather than by GNU binutils. It should be a



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