/*
   * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
   *
   * Copyright (C) 2002-2011 Aleph One Ltd.
   *   for Toby Churchill Ltd and Brightstar Engineering
   *
   * Created by Charles Manning <charles@aleph1.co.uk>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU Lesser General Public License version 2.1 as
   * published by the Free Software Foundation.
   *
   * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
   */
  
  #ifndef __YAFFS_YAFFS2_H__
  #define __YAFFS_YAFFS2_H__
  
  #include "yaffs_guts.h"
  
  void yaffs_calc_oldest_dirty_seq(struct yaffs_dev *dev);
  void yaffs2_find_oldest_dirty_seq(struct yaffs_dev *dev);
  void yaffs2_clear_oldest_dirty_seq(struct yaffs_dev *dev,
  				   struct yaffs_block_info *bi);
  void yaffs2_update_oldest_dirty_seq(struct yaffs_dev *dev, unsigned block_no,
  				    struct yaffs_block_info *bi);
  int yaffs_block_ok_for_gc(struct yaffs_dev *dev, struct yaffs_block_info *bi);
  u32 yaffs2_find_refresh_block(struct yaffs_dev *dev);
  int yaffs2_checkpt_required(struct yaffs_dev *dev);
  int yaffs_calc_checkpt_blocks_required(struct yaffs_dev *dev);
  
  void yaffs2_checkpt_invalidate(struct yaffs_dev *dev);
  int yaffs2_checkpt_save(struct yaffs_dev *dev);
  int yaffs2_checkpt_restore(struct yaffs_dev *dev);
  
  int yaffs2_handle_hole(struct yaffs_obj *obj, loff_t new_size);
  int yaffs2_scan_backwards(struct yaffs_dev *dev);
  
  #endif