From 043b496b8d1b5965672c9152ed721e7b3781b89a Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Fri, 4 Apr 2008 16:59:58 +0000
Subject: [PATCH] Add note about PZERO being obsolete, because so much code
 uses it. Feel free to improve the verbage, since this was a compromise
 between conflicting feedback I got on my original version.

---
 share/man/man9/sleep.9 | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/share/man/man9/sleep.9 b/share/man/man9/sleep.9
index 002924247301..aa87642d5b63 100644
--- a/share/man/man9/sleep.9
+++ b/share/man/man9/sleep.9
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd February 27, 2007
+.Dd April 4, 2008
 .Os
 .Dt SLEEP 9
 .Sh NAME
@@ -93,6 +93,10 @@ then the thread will be made
 runnable with the specified
 .Fa priority
 when it resumes.
+.Dv PZERO 
+should never be used, as it is for compatibility only.
+A new priority of 0 means to use the thread's current priority when
+it is made runnable again.
 If
 .Fa priority
 includes the