From 3db1642392580ebfb23fa71791eaa33a04a2047f Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 2 Jun 2021 03:40:08 -0700
Subject: [PATCH] mount: skip persisting metadata if file is open

---
 weed/filesys/file.go | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/weed/filesys/file.go b/weed/filesys/file.go
index 4b711ecee..8a5b619ac 100644
--- a/weed/filesys/file.go
+++ b/weed/filesys/file.go
@@ -117,12 +117,12 @@ func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *f
 	}
 	if file.isOpen > 0 {
 		file.wfs.handlesLock.Lock()
-		fileHandle := file.wfs.handles[file.Id()]
+		fh := file.wfs.handles[file.Id()]
 		file.wfs.handlesLock.Unlock()
 
-		if fileHandle != nil {
-			fileHandle.Lock()
-			defer fileHandle.Unlock()
+		if fh != nil {
+			fh.Lock()
+			defer fh.Unlock()
 		}
 	}
 
@@ -207,6 +207,11 @@ func (file *File) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error
 	if err := setxattr(entry, req); err != nil {
 		return err
 	}
+	file.dirtyMetadata = true
+
+	if file.isOpen > 0 {
+		return nil
+	}
 
 	return file.saveEntry(entry)
 
@@ -224,6 +229,11 @@ func (file *File) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest)
 	if err := removexattr(entry, req); err != nil {
 		return err
 	}
+	file.dirtyMetadata = true
+
+	if file.isOpen > 0 {
+		return nil
+	}
 
 	return file.saveEntry(entry)
 
@@ -351,6 +361,8 @@ func (file *File) saveEntry(entry *filer_pb.Entry) error {
 
 		file.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
 
+		file.dirtyMetadata = false
+
 		return nil
 	})
 }