From 084744ef246904fce9e010846a5a60167f6afb8c Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Wed, 14 Jan 2015 17:39:01 +0100
Subject: [PATCH] futex.2: Note arguments ignored by FUTEX_TRYLOCK_PI

Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man2/futex.2 | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/man2/futex.2 b/man2/futex.2
index b24524975..b481c452d 100644
--- a/man2/futex.2
+++ b/man2/futex.2
@@ -785,6 +785,14 @@ bit is set.
 .\"       the man page.
 .\" FIXME And *how* does FUTEX_TRYLOCK_PI deal with this situation?
 User space cannot handle this race free.
+
+The
+.IR uaddr2 ,
+.IR val ,
+.IR timeout ,
+and
+.IR val3
+arguments are ignored.
 .TP
 .BR FUTEX_UNLOCK_PI " (since Linux 2.6.18)"
 .\" commit c87e2837be82df479a6bae9f155c43516d2feebc