From f704d3b273e2d1a9874397d11d7b6611667c3d5b Mon Sep 17 00:00:00 2001
From: shiyunhao <231220148@smail.nju.edu.cn>
Date: Mon, 29 Jun 2026 21:21:41 +0800
Subject: [PATCH] Add comments to processUpdatingUFS in
 pkg/ddc/alluxio/ufs_internal.go

---
 pkg/ddc/alluxio/ufs_internal.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkg/ddc/alluxio/ufs_internal.go b/pkg/ddc/alluxio/ufs_internal.go
index 69b56ee8728..0ab8a58d893 100644
--- a/pkg/ddc/alluxio/ufs_internal.go
+++ b/pkg/ddc/alluxio/ufs_internal.go
@@ -145,6 +145,10 @@ func (e *AlluxioEngine) FindUnmountedUFS() (unmountedPaths []string, err error)
 	return fileUtils.FindUnmountedAlluxioPaths(alluxioPaths)
 }
 
+// processUpdatingUFS updates the under file system (UFS) mount configuration for the Alluxio engine.
+// It first determines the update method based on whether mount config map is enabled,
+// then if the update succeeds, it resets the dataset's UfsTotal status to trigger a metadata sync,
+// and finally updates the mount timestamp when new mount paths are added.
 func (e *AlluxioEngine) processUpdatingUFS(ufsToUpdate *utils.UFSToUpdate) (updateReady bool, err error) {
 	dataset, err := utils.GetDataset(e.Client, e.name, e.namespace)
 	if err != nil {