packagefs: Fix adding package links twice to volume

PackageLinkDirectory::NotifyDirectoryAdded() first notified the listener
(Volume) about the directory itself, then about the links it contained.
Since Volume adds the nodes recursively, the latter were added twice,
resulting in a corrupted ID hash table.

src/add-ons/kernel/file_systems/packagefs/PackageLinkDirectory.cpp

@@ -149,26 +149,6 @@ PackageLinkDirectory::UpdatePackageDependencies(Package* package,
 }
 
 
-void
-PackageLinkDirectory::NotifyDirectoryAdded(PackageLinksListener* listener)
-{
-	NodeWriteLocker writeLocker(this);
-
-	listener->PackageLinkNodeAdded(this);
-
-	if (fSelfLink != NULL) {
-		NodeWriteLocker selfLinkLocker(fSelfLink);
-		listener->PackageLinkNodeAdded(fSelfLink);
-	}
-
-	for (FamilyDependencyList::Iterator it = fDependencyLinks.GetIterator();
-			DependencyLink* link = it.Next();) {
-		NodeWriteLocker linkLocker(link);
-		listener->PackageLinkNodeAdded(link);
-	}
-}
-
-
 status_t
 PackageLinkDirectory::_Update(PackageLinksListener* listener)
 {

src/add-ons/kernel/file_systems/packagefs/PackageLinkDirectory.h

@@ -32,9 +32,6 @@ public:
 			void				UpdatePackageDependencies(Package* package,
 									PackageLinksListener* listener);
 
-			void				NotifyDirectoryAdded(
-									PackageLinksListener* listener);
-
 			bool				IsEmpty() const
 									{ return fPackages.IsEmpty(); }
 

src/add-ons/kernel/file_systems/packagefs/PackageLinksDirectory.cpp

@@ -70,8 +70,10 @@ PackageLinksDirectory::AddPackage(Package* package)
 		// No entry is in the way, so just add the link directory.
 		AddChild(linkDirectory);
 
-		if (fListener != NULL)
-			linkDirectory->NotifyDirectoryAdded(fListener);
+		if (fListener != NULL) {
+			NodeWriteLocker writeLocker(linkDirectory);
+			fListener->PackageLinkNodeAdded(linkDirectory);
+		}
 	}
 
 	return B_OK;