1 files changed, 12 insertions, 1 deletions
diff --git a/Kernel/FileSystem/FileBackedFileSystem.h b/Kernel/FileSystem/FileBackedFileSystem.h
index e959bb729c..8bfb1a1b6f 100644
--- a/Kernel/FileSystem/FileBackedFileSystem.h
+++ b/Kernel/FileSystem/FileBackedFileSystem.h
@@ -12,6 +12,8 @@
 namespace Kernel {
 
 class FileBackedFileSystem : public FileSystem {
+    friend class VirtualFileSystem;
+
 public:
     virtual ~FileBackedFileSystem() override;
 
@@ -23,10 +25,19 @@ public:
 protected:
     explicit FileBackedFileSystem(OpenFileDescription&);
 
+    // Note: We require all FileBackedFileSystem to implement something that actually
+    // takes into account the fact that we will clean the last mount of the filesystem,
+    // therefore, removing the file system with it from the Kernel memory.
+    virtual ErrorOr<void> prepare_to_clear_last_mount() override = 0;
+
+    virtual ErrorOr<void> initialize_while_locked() = 0;
+    virtual bool is_initialized_while_locked() = 0;
+
 private:
+    virtual ErrorOr<void> initialize() override final;
     virtual bool is_file_backed() const override { return true; }
 
+    IntrusiveListNode<FileBackedFileSystem> m_file_backed_file_system_node;
     mutable NonnullLockRefPtr<OpenFileDescription> m_file_description;
 };
-
 }