/*
   * dat.h - NILFS disk address translation.
   *
   * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
   *
   * Written by Koji Sato <koji@osrg.net>.
   */
  
  #ifndef _NILFS_DAT_H
  #define _NILFS_DAT_H
  
  #include <linux/types.h>
  #include <linux/buffer_head.h>
  #include <linux/fs.h>

  
  struct nilfs_palloc_req;
  
  int nilfs_dat_translate(struct inode *, __u64, sector_t *);
  
  int nilfs_dat_prepare_alloc(struct inode *, struct nilfs_palloc_req *);
  void nilfs_dat_commit_alloc(struct inode *, struct nilfs_palloc_req *);
  void nilfs_dat_abort_alloc(struct inode *, struct nilfs_palloc_req *);
  int nilfs_dat_prepare_start(struct inode *, struct nilfs_palloc_req *);
  void nilfs_dat_commit_start(struct inode *, struct nilfs_palloc_req *,
  			    sector_t);

  int nilfs_dat_prepare_end(struct inode *, struct nilfs_palloc_req *);
  void nilfs_dat_commit_end(struct inode *, struct nilfs_palloc_req *, int);
  void nilfs_dat_abort_end(struct inode *, struct nilfs_palloc_req *);

  int nilfs_dat_prepare_update(struct inode *, struct nilfs_palloc_req *,
  			     struct nilfs_palloc_req *);
  void nilfs_dat_commit_update(struct inode *, struct nilfs_palloc_req *,
  			     struct nilfs_palloc_req *, int);
  void nilfs_dat_abort_update(struct inode *, struct nilfs_palloc_req *,
  			    struct nilfs_palloc_req *);

  
  int nilfs_dat_mark_dirty(struct inode *, __u64);
  int nilfs_dat_freev(struct inode *, __u64 *, size_t);
  int nilfs_dat_move(struct inode *, __u64, sector_t);

  ssize_t nilfs_dat_get_vinfo(struct inode *, void *, unsigned, size_t);

  int nilfs_dat_read(struct super_block *sb, size_t entry_size,
  		   struct nilfs_inode *raw_inode, struct inode **inodep);

  #endif	/* _NILFS_DAT_H */