FUSE: invalidate FUSE cached entries

fix https://github.com/chrislusf/seaweedfs/issues/2108

weed/filesys/meta_cache/meta_cache_subscribe.go

@@ -40,9 +40,13 @@ func SubscribeMetaEvents(mc *MetaCache, selfSignature int32, client filer_pb.Fil
 			newEntry = filer.FromPbEntry(dir, message.NewEntry)
 		}
 		err := mc.AtomicUpdateEntryFromFiler(context.Background(), oldPath, newEntry)
-		if err == nil && message.OldEntry != nil && message.NewEntry != nil {
-			key := util.NewFullPath(dir, message.NewEntry.Name)
-			mc.invalidateFunc(key)
+		if err == nil && message.OldEntry != nil {
+			oldKey := util.NewFullPath(resp.Directory, message.OldEntry.Name)
+			mc.invalidateFunc(oldKey)
+			if message.NewEntry != nil {
+				key := util.NewFullPath(dir, message.NewEntry.Name)
+				mc.invalidateFunc(key)
+			}
 		}
 
 		return err