From f56e6d231e86ff1ca5fefcda220012ee121c88a5 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 17 Dec 2020 12:46:20 -0800
Subject: [PATCH] Revert "Merge pull request #1683 from qieqieplus/master"

This reverts commit 8cb67952db822ef232dd2701ce78a5486d54b4ea, reversing
changes made to 200e56215a4fdc4ec424f05fb975cdc876d7a2b4.
---
 weed/storage/disk_location.go | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/weed/storage/disk_location.go b/weed/storage/disk_location.go
index 271a36ef7..6623c0111 100644
--- a/weed/storage/disk_location.go
+++ b/weed/storage/disk_location.go
@@ -101,14 +101,12 @@ func (l *DiskLocation) loadExistingVolume(fileInfo os.FileInfo, needleMapKind Ne
 	}
 
 	// avoid loading one volume more than once
-	l.volumesLock.Lock()
-	if _, found := l.volumes[vid]; found {
-		l.volumesLock.Unlock()
+	l.volumesLock.RLock()
+	_, found := l.volumes[vid]
+	l.volumesLock.RUnlock()
+	if found {
 		glog.V(1).Infof("loaded volume, %v", vid)
 		return true
-	} else {
-		l.volumes[vid] = nil
-		l.volumesLock.Unlock()
 	}
 
 	// load the volume