update realtime monitor

MediaBrowser.Controller/Entities/BaseItem.cs

@@ -1854,10 +1854,13 @@ namespace MediaBrowser.Controller.Entities
         /// Do whatever refreshing is necessary when the filesystem pertaining to this item has changed.
         /// </summary>
         /// <returns>Task.</returns>
-        public virtual Task ChangedExternally()
+        public virtual void ChangedExternally()
         {
-            ProviderManager.QueueRefresh(Id, new MetadataRefreshOptions(FileSystem), RefreshPriority.High);
-            return Task.FromResult(true);
+            ProviderManager.QueueRefresh(Id, new MetadataRefreshOptions(FileSystem)
+            {
+                ValidateChildren = true,
+
+            }, RefreshPriority.High);
         }
 
         /// <summary>

MediaBrowser.Controller/Entities/Folder.cs

@@ -1325,19 +1325,6 @@ namespace MediaBrowser.Controller.Entities
             return false;
         }
 
-        /// <summary>
-        /// Folders need to validate and refresh
-        /// </summary>
-        /// <returns>Task.</returns>
-        public override async Task ChangedExternally()
-        {
-            var progress = new Progress<double>();
-
-            await ValidateChildren(progress, CancellationToken.None).ConfigureAwait(false);
-
-            await base.ChangedExternally().ConfigureAwait(false);
-        }
-
         /// <summary>
         /// Marks the played.
         /// </summary>

MediaBrowser.Controller/Providers/MetadataRefreshOptions.cs

@@ -15,6 +15,7 @@ namespace MediaBrowser.Controller.Providers
         public bool ReplaceAllMetadata { get; set; }
 
         public bool IsPostRecursiveRefresh { get; set; }
+        public bool ValidateChildren { get; set; }
 
         public MetadataRefreshMode MetadataRefreshMode { get; set; }
         public RemoteSearchResult SearchResult { get; set; }