svn commit: r312892 - stable/11/lib/libc/sys

[Warren Block]

Author: wblock (doc committer)
Date: Fri Jan 27 17:54:24 2017
New Revision: 312892
URL: https://svnweb.freebsd.org/changeset/base/312892

Log:
  MFC r312547: Mention sendfile(2) by popular demand.
  
  Sponsored by:	iXsystems

Modified:
  stable/11/lib/libc/sys/shm_open.2
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/lib/libc/sys/shm_open.2
==============================================================================
--- stable/11/lib/libc/sys/shm_open.2	Fri Jan 27 16:53:53 2017	(r312891)
+++ stable/11/lib/libc/sys/shm_open.2	Fri Jan 27 17:54:24 2017	(r312892)
@@ -28,7 +28,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd January 13, 2017
+.Dd January 20, 2017
 .Dt SHM_OPEN 2
 .Os
 .Sh NAME
@@ -187,6 +187,11 @@ kernel implementation explicitly include
 and
 .Xr write 2 .
 .Pp
+.Fx
+also supports zero-copy transmission of data from shared memory
+objects with
+.Xr sendfile 2 .
+.Pp
 Neither shared memory objects nor their contents persist across reboots.
 .Pp
 Writes do not extend shared memory objects, so
@@ -281,7 +286,8 @@ requires write permission to the shared 
 .Xr fstat 2 ,
 .Xr ftruncate 2 ,
 .Xr mmap 2 ,
-.Xr munmap 2
+.Xr munmap 2 ,
+.Xr sendfile 2
 .Sh STANDARDS
 The
 .Fn shm_open