From 76f347bada10c4b061ece6676ed3885006e59a99 Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Wed, 14 Jan 2015 12:31:44 +0100
Subject: [PATCH] futex.2: ERRORS: Add EPERM case for FUTEX_UNLOCK_PI

Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man2/futex.2 | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/man2/futex.2 b/man2/futex.2
index eea0ca29d..fb7d3263e 100644
--- a/man2/futex.2
+++ b/man2/futex.2
@@ -931,6 +931,10 @@ The caller is not allowed to attach itself to the futex.
 .\"           futex_requeue() ==> futex_proxy_trylock_atomic() ==> 
 .\"               futex_lock_pi_atomic() ==> attach_to_pi_owner() ==> EPERM?
 .TP
+.BR EPERM
+.BR FUTEX_UNLOCK_PI
+The caller does not own the futex.
+.TP
 .BR ESRCH
 .RB ( FUTEX_LOCK_PI ,
 .BR FUTEX_TRYLOCK_PI )