From e3f2b541f2bd0433e997d0f8060934b181a5d0e0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Thu, 10 Mar 2016 12:56:32 +0200
Subject: [PATCH] eth/downloader: fix a throughput estimation data race

---
 eth/downloader/peer.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/eth/downloader/peer.go b/eth/downloader/peer.go
index 80f08b68f..c4846194b 100644
--- a/eth/downloader/peer.go
+++ b/eth/downloader/peer.go
@@ -251,8 +251,8 @@ func (p *peer) setIdle(started time.Time, delivered int, throughput *float64, id
 	// Irrelevant of the scaling, make sure the peer ends up idle
 	defer atomic.StoreInt32(idle, 0)
 
-	p.lock.RLock()
-	defer p.lock.RUnlock()
+	p.lock.Lock()
+	defer p.lock.Unlock()
 
 	// If nothing was delivered (hard timeout / unavailable data), reduce throughput to minimum
 	if delivered == 0 {