packagefs: Followups to the directory locking change.

* Fix the build with DEBUG enabled.

 * Add some more read-locks, to be safe.

src/add-ons/kernel/file_systems/packagefs/indices/Index.cpp

@@ -77,7 +77,7 @@ Index::Dump()
 		if (GetIterator(it)) {
 			while (Node* node = it.Next()) {
 				PRINT("  node: `%s', dir: %" B_PRIdINO "\n",
-					node->Name().Data(), node->Parent()->ID());
+					node->Name().Data(), node->GetParentUnchecked()->ID());
 			}
 		}
 	)

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

@@ -148,7 +148,7 @@ packagefs_lookup(fs_volume* fsVolume, fs_vnode* fsDir, const char* entryName,
 	Node* node = (Node*)fsDir->private_node;
 
 	FUNCTION("volume: %p, dir: %p (%" B_PRId64 "), entry: \"%s\"\n", volume,
-		dir, dir->ID(), entryName);
+		node, node->ID(), entryName);
 
 	if (!S_ISDIR(node->Mode()))
 		return B_NOT_A_DIRECTORY;

src/add-ons/kernel/file_systems/packagefs/volume/Volume.cpp

@@ -1923,6 +1923,7 @@ Volume::_AddPackageLinksNode(Node* node)
 	// If this is a directory, recursively add descendants. The directory tree
 	// for the package links isn't deep, so we can do recursion.
 	if (Directory* directory = dynamic_cast<Directory*>(node)) {
+		DirectoryReadLocker directoryReadLocker(directory);
 		for (Node* child = directory->FirstChild(); child != NULL;
 				child = directory->NextChild(child)) {
 			_AddPackageLinksNode(child);
@@ -1937,6 +1938,7 @@ Volume::_RemovePackageLinksNode(Node* node)
 	// If this is a directory, recursively remove descendants. The directory
 	// tree for the package links isn't deep, so we can do recursion.
 	if (Directory* directory = dynamic_cast<Directory*>(node)) {
+		DirectoryReadLocker directoryReadLocker(directory);
 		for (Node* child = directory->FirstChild(); child != NULL;
 				child = directory->NextChild(child)) {
 			_RemovePackageLinksNode(child);