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Update zero_copy(9) man page to note the renamed kernel options

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and to warn about unsafeness of COW based sends.
This commit is contained in:
Andre Oppermann 2012-10-23 14:25:37 +00:00
parent e37e60c379
commit a375e5b1ac
1 changed files with 5 additions and 2 deletions
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7
share/man/man9/zero_copy.9
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@ -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 ,