From 81eb0e30f9b39e99d1bb7b56828fd32e50ea055a Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Wed, 1 Aug 2018 15:59:37 +0200
Subject: peer: ensure destruction doesn't race

Completely rework peer removal to ensure peers don't jump between
contexts and create races.
---
 src/compat/compat.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/compat/compat.h')

diff --git a/src/compat/compat.h b/src/compat/compat.h
index 5b3075b..86df5f3 100644
--- a/src/compat/compat.h
+++ b/src/compat/compat.h
@@ -51,6 +51,9 @@
 #ifndef READ_ONCE
 #define READ_ONCE ACCESS_ONCE
 #endif
+#ifndef WRITE_ONCE
+#define WRITE_ONCE(p, v) (ACCESS_ONCE(p) = (v))
+#endif
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)
 #include "udp_tunnel/udp_tunnel_partial_compat.h"
-- 
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