/*
   * ifile.h - NILFS inode file
   *
   * 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.
   *

   * Written by Amagai Yoshiji.
   * Revised by Ryusuke Konishi.

   *
   */
  
  #ifndef _NILFS_IFILE_H
  #define _NILFS_IFILE_H
  
  #include <linux/fs.h>
  #include <linux/buffer_head.h>

  #include "mdt.h"
  #include "alloc.h"

  
  static inline struct nilfs_inode *
  nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh)
  {
  	void *kaddr = kmap(ibh->b_page);

  	return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr);
  }
  
  static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino,
  					   struct buffer_head *ibh)
  {
  	kunmap(ibh->b_page);
  }
  
  int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **);
  int nilfs_ifile_delete_inode(struct inode *, ino_t);
  int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **);

  int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *);

  int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root,
  		     size_t inode_size, struct nilfs_inode *raw_inode,
  		     struct inode **inodep);

  #endif	/* _NILFS_IFILE_H */