From 712b3e9e53e116f58399fe30cd7038b234a5832b Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 13 Feb 2021 13:39:37 -0800
Subject: [PATCH] mount: release need to avoid nil reader

fix https://github.com/chrislusf/seaweedfs/issues/1803
---
 weed/filesys/filehandle.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/weed/filesys/filehandle.go b/weed/filesys/filehandle.go
index 4ed0e6c2b..fb073c9cd 100644
--- a/weed/filesys/filehandle.go
+++ b/weed/filesys/filehandle.go
@@ -196,7 +196,9 @@ func (fh *FileHandle) Release(ctx context.Context, req *fuse.ReleaseRequest) err
 
 		fh.f.wfs.ReleaseHandle(fh.f.fullpath(), fuse.HandleID(fh.handle))
 		if closer, ok := fh.f.reader.(io.Closer); ok {
-			closer.Close()
+			if closer != nil {
+				closer.Close()
+			}
 		}
 		fh.f.reader = nil
 	}