Kernel: Split BlockBasedFileSystem off FileBackedFileSystem

FileBackedFileSystem is one that's backed by (mounted from) a file, in other
words one that has a "source" of the mount; that doesn't mean it deals in
blocks. The hierarchy now becomes:

* FS
  * ProcFS
  * DevPtsFS
  * TmpFS
  * FileBackedFS
    * (future) Plan9FS
    * BlockBasedFS
      * Ext2FS

1 files changed, 1 insertions, 26 deletions

diff --git a/Kernel/FileSystem/FileBackedFileSystem.h b/Kernel/FileSystem/FileBackedFileSystem.h
index cb9c2d1c7b..1297b8b556 100644
--- a/Kernel/FileSystem/FileBackedFileSystem.h
+++ b/Kernel/FileSystem/FileBackedFileSystem.h
@@ -28,7 +28,6 @@
 
 #include <Kernel/FileSystem/FileDescription.h>
 #include <Kernel/FileSystem/FileSystem.h>
-#include <Kernel/Forward.h>
 
 namespace Kernel {
 
@@ -39,39 +38,15 @@ public:
     File& file() { return m_file_description->file(); }
     FileDescription& file_description() { return *m_file_description; }
     const File& file() const { return m_file_description->file(); }
-    const FileDescription& file_description() const { return *m_file_description; }
-
-    virtual void flush_writes() override;
-
-    void flush_writes_impl();
-
-    size_t logical_block_size() const { return m_logical_block_size; };
+    FileDescription& file_description() const { return *m_file_description; }
 
 protected:
     explicit FileBackedFS(FileDescription&);
 
-    bool read_block(unsigned index, u8* buffer, size_t count, size_t offset = 0, bool allow_cache = true) const;
-    bool read_blocks(unsigned index, unsigned count, u8* buffer, bool allow_cache = true) const;
-
-    bool raw_read(unsigned index, u8* buffer);
-    bool raw_write(unsigned index, const u8* buffer);
-
-    bool raw_read_blocks(unsigned index, size_t count, u8* buffer);
-    bool raw_write_blocks(unsigned index, size_t count, const u8* buffer);
-
-    bool write_block(unsigned index, const u8* buffer, size_t count, size_t offset = 0, bool allow_cache = true);
-    bool write_blocks(unsigned index, unsigned count, const u8*, bool allow_cache = true);
-
-    size_t m_logical_block_size { 512 };
-
 private:
     virtual bool is_file_backed() const override { return true; }
 
-    DiskCache& cache() const;
-    void flush_specific_block_if_needed(unsigned index);
-
     mutable NonnullRefPtr<FileDescription> m_file_description;
-    mutable OwnPtr<DiskCache> m_cache;
 };
 
 }