From dabdc5e52b554f48cc33cffe67700aa552592050 Mon Sep 17 00:00:00 2001
From: Derek McGowan <derek@mcgstyle.net>
Date: Fri, 26 Aug 2016 17:40:21 -0700
Subject: [PATCH] Fix access race in proxy scheduler

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
---
 registry/proxy/scheduler/scheduler.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/registry/proxy/scheduler/scheduler.go b/registry/proxy/scheduler/scheduler.go
index 0c8a85348..bde946576 100644
--- a/registry/proxy/scheduler/scheduler.go
+++ b/registry/proxy/scheduler/scheduler.go
@@ -134,11 +134,12 @@ func (ttles *TTLExpirationScheduler) Start() error {
 		for {
 			select {
 			case <-ttles.saveTimer.C:
+				ttles.Lock()
 				if !ttles.indexDirty {
+					ttles.Unlock()
 					continue
 				}
 
-				ttles.Lock()
 				err := ttles.writeState()
 				if err != nil {
 					context.GetLogger(ttles.ctx).Errorf("Error writing scheduler state: %s", err)