diff --git a/depends/bazil.org/fuse/fs/serve.go b/depends/bazil.org/fuse/fs/serve.go
index 61bb43dd9..f9ab9525d 100644
--- a/depends/bazil.org/fuse/fs/serve.go
+++ b/depends/bazil.org/fuse/fs/serve.go
@@ -926,6 +926,40 @@ func (s *Server) Serve(fs FS, opt *proto.MountOptions) error {
 		return fmt.Errorf("restore fail: %v", err)
 	}
 
+	if opt != nil && opt.FuseServeThreads <= 0 {
+		for {
+			if s.TrySuspend(fs) {
+				break
+			}
+
+			req, err := s.conn.ReadRequest()
+			if err != nil {
+				if err == io.EOF {
+					break
+				}
+				return err
+			}
+
+			switch req.(type) {
+			case *fuse.ForgetRequest:
+				ctx := context.Background()
+				ForgetServeLimit.Wait(ctx)
+			default:
+			}
+
+			s.wg.Add(1)
+			go func() {
+				defer s.wg.Done()
+				if opt != nil && opt.RequestTimeout > 0 {
+					s.serveWithTimeOut(req, opt.RequestTimeout)
+				} else {
+					s.serve(req)
+				}
+			}()
+		}
+		return nil
+	}
+
 	fn := func() error {
 		defer s.wg.Done()
 
@@ -949,16 +983,6 @@ func (s *Server) Serve(fs FS, opt *proto.MountOptions) error {
 			default:
 			}
 
-			// s.wg.Add(1)
-			// go func() {
-			// 	defer s.wg.Done()
-			// 	if opt != nil && opt.RequestTimeout > 0 {
-			// 		s.serveWithTimeOut(req, opt.RequestTimeout)
-			// 	} else {
-			// 		s.serve(req)
-			// 	}
-			// }()
-
 			if opt != nil && opt.RequestTimeout > 0 {
 				s.serveWithTimeOut(req, opt.RequestTimeout)
 			} else {
diff --git a/proto/mount_options.go b/proto/mount_options.go
index b909deffd..40fcfd932 100644
--- a/proto/mount_options.go
+++ b/proto/mount_options.go
@@ -205,7 +205,7 @@ func InitMountOptions(opts []MountOption) {
 	opts[MetaCacheAcceleration] = MountOption{"metaCacheAcceleration", "keep meta cache and get inode/extents in one go", "", false}
 	opts[MinimumNlinkReadDir] = MountOption{"minimumNlinkReadDir", "the minimum Nlink value of the directory that actively triggers the ReadDir operation", "", int64(10000)}
 	opts[InodeLruLimit] = MountOption{"inodeLruLimit", "capacity for inode lru", "", int64(10000000)}
-	opts[FuseServeThreads] = MountOption{"fuseServeThreads", "Fuse Serve Threads", "", int64(64)}
+	opts[FuseServeThreads] = MountOption{"fuseServeThreads", "Fuse Serve Threads", "", int64(0)}
 	for i := 0; i < MaxMountOption; i++ {
 		flag.StringVar(&opts[i].cmdlineValue, opts[i].keyword, "", opts[i].description)
 	}