/*
 * 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.
 *
 * Written by Koji Sato.
 */

#ifndef _NILFS_DAT_H
#define _NILFS_DAT_H

#include <linux/types.h>
#include <linux/buffer_head.h>
#include <linux/fs.h>
#include <linux/nilfs2_ondisk.h>	/* nilfs_inode, nilfs_checkpoint */


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 int, 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 */
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