From ff8bc614345740a36c37c482b9ea280e58f7935e Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Tue, 3 Oct 2017 15:28:59 +0200
Subject: [PATCH] flock.2: Placing an exclusive lock over NFS requires the file
 is open for writing

Reported-by: Petr Uzel <petr.uzel@suse.cz>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man2/flock.2 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/man2/flock.2 b/man2/flock.2
index 2e38a9d08..2dce918b0 100644
--- a/man2/flock.2
+++ b/man2/flock.2
@@ -223,6 +223,8 @@ and
 locks
 .I do
 interact with one another over NFS.
+It also means that in order to place an exclusive lock,
+the file must be opened for writing.
 .PP
 Since Linux 2.6.37,
 .\" commit 5eebde23223aeb0ad2d9e3be6590ff8bbfab0fc2