From 77393d3d304206cdc240f59496aab75f07b90487 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 23 Aug 2020 00:35:50 -0700
Subject: [PATCH] add file handle locking when changing file entry

---
 weed/filesys/file.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/weed/filesys/file.go b/weed/filesys/file.go
index d9e1f2662..43f3ddf07 100644
--- a/weed/filesys/file.go
+++ b/weed/filesys/file.go
@@ -106,6 +106,16 @@ func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *f
 	if err := file.maybeLoadEntry(ctx); err != nil {
 		return err
 	}
+	if file.isOpen > 0 {
+		file.wfs.handlesLock.Lock()
+		fileHandle := file.wfs.handles[file.fullpath().AsInode()]
+		file.wfs.handlesLock.Unlock()
+
+		if fileHandle != nil {
+			fileHandle.Lock()
+			defer fileHandle.Unlock()
+		}
+	}
 
 	if req.Valid.Size() {