svn commit: r320314 - head/lib/libc/sys

[Konstantin Belousov]

Author: kib
Date: Sat Jun 24 16:36:30 2017
New Revision: 320314
URL: https://svnweb.freebsd.org/changeset/base/320314

Log:
  Remove the description of MAP_HASSEMAPHORE.
  
  The flag is not implemented, all FreeBSD architectures correctly
  handle locks on normal cacheable mappings.  On the other hand, the
  flag was specified by some software, so it is kept in the header as
  nop.  Removal from the man page should discourage its use.
  
  Reviewed by:	alc, bjk, emaste, markj, pho
  MFC after:	3 days
  X-Differential revision:	https://reviews.freebsd.org/D11306

Modified:
  head/lib/libc/sys/mmap.2

Modified: head/lib/libc/sys/mmap.2
==============================================================================
--- head/lib/libc/sys/mmap.2	Sat Jun 24 16:21:34 2017	(r320313)
+++ head/lib/libc/sys/mmap.2	Sat Jun 24 16:36:30 2017	(r320314)
@@ -28,7 +28,7 @@
 .\"	@(#)mmap.2	8.4 (Berkeley) 5/11/95
 .\" $FreeBSD$
 .\"
-.Dd February 4, 2017
+.Dd June 22, 2017
 .Dt MMAP 2
 .Os
 .Sh NAME
@@ -199,9 +199,6 @@ In contrast, if
 .Dv MAP_EXCL
 is specified, the request will fail if a mapping
 already exists within the range.
-.It Dv MAP_HASSEMAPHORE
-Notify the kernel that the region may contain semaphores and that special
-handling may be necessary.
 .It Dv MAP_NOCORE
 Region is not included in a core file.
 .It Dv MAP_NOSYNC