svn commit: r241932 - head/share/man/man9
Andre Oppermann
andre at FreeBSD.org
Tue Oct 23 14:25:38 UTC 2012
Author: andre
Date: Tue Oct 23 14:25:37 2012
New Revision: 241932
URL: http://svn.freebsd.org/changeset/base/241932
Log:
Update zero_copy(9) man page to note the renamed kernel options
and to warn about unsafeness of COW based sends.
Modified:
head/share/man/man9/zero_copy.9
Modified: head/share/man/man9/zero_copy.9
==============================================================================
--- head/share/man/man9/zero_copy.9 Tue Oct 23 14:19:44 2012 (r241931)
+++ head/share/man/man9/zero_copy.9 Tue Oct 23 14:25:37 2012 (r241932)
@@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd December 5, 2004
+.Dd October 23, 2012
.Dt ZERO_COPY 9
.Os
.Sh NAME
@@ -33,7 +33,8 @@
.Nm zero_copy_sockets
.Nd "zero copy sockets code"
.Sh SYNOPSIS
-.Cd "options ZERO_COPY_SOCKETS"
+.Cd "options SOCKET_SEND_COW"
+.Cd "options SOCKET_RECV_PFLIP"
.Sh DESCRIPTION
The
.Fx
@@ -155,6 +156,8 @@ variables respectively.
.Xr sendfile 2 ,
.Xr socket 2 ,
.Xr ti 4
+.Sh BUGS
+The COW based send mechanism is not safe and may result in kernel crashes.
.Sh HISTORY
The zero copy sockets code first appeared in
.Fx 5.0 ,
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