From d1bb23645e7a16430e712bd0ea0c768082bea8e3 Mon Sep 17 00:00:00 2001
From: chrislu <chris.lu@gmail.com>
Date: Thu, 1 Sep 2022 13:08:34 -0700
Subject: [PATCH] Revert "avoid data race on grace.hooks (#3572)"

This reverts commit c37d6fc01a8b70ea3686a81c2acf9d3da0b5ef09.
---
 weed/util/grace/signal_handling.go | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/weed/util/grace/signal_handling.go b/weed/util/grace/signal_handling.go
index 24d2b184f..fc7afcad9 100644
--- a/weed/util/grace/signal_handling.go
+++ b/weed/util/grace/signal_handling.go
@@ -12,7 +12,7 @@ import (
 
 var signalChan chan os.Signal
 var hooks = make([]func(), 0)
-var hookLock sync.RWMutex
+var hookLock sync.Mutex
 
 func init() {
 	signalChan = make(chan os.Signal, 1)
@@ -27,9 +27,7 @@ func init() {
 		// syscall.SIGQUIT,
 	)
 	go func() {
-		hookLock.RLock()
-		defer hookLock.RUnlock()
-		for range signalChan {
+		for _ = range signalChan {
 			for _, hook := range hooks {
 				hook()
 			}