:zap: Improve performance for refresh refs

kernel/model/backlink.go

@@ -44,20 +44,12 @@ func RefreshBacklink(id string) {
 
 func refreshRefsByDefID(defID string) {
 	refs := sql.QueryRefsByDefID(defID, false)
-	trees := map[string]*parse.Tree{}
+	var rootIDs []string
 	for _, ref := range refs {
-		tree := trees[ref.RootID]
-		if nil != tree {
-			continue
-		}
-
-		var loadErr error
-		tree, loadErr = LoadTreeByBlockID(ref.RootID)
-		if nil != loadErr {
-			logging.LogErrorf("refresh tree refs failed: %s", loadErr)
-			continue
-		}
-		trees[ref.RootID] = tree
+		rootIDs = append(rootIDs, ref.RootID)
+	}
+	trees := filesys.LoadTrees(rootIDs)
+	for _, tree := range trees {
 		sql.UpdateRefsTreeQueue(tree)
 	}
 }