linux_old1/fs/nilfs2/direct.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * direct.h - NILFS direct block pointer.
 *
 * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
 *
 * Written by Koji Sato.
 */

#ifndef _NILFS_DIRECT_H
#define _NILFS_DIRECT_H

#include <linux/types.h>
#include <linux/buffer_head.h>
#include "bmap.h"


#define NILFS_DIRECT_NBLOCKS	(NILFS_BMAP_SIZE / sizeof(__le64) - 1)
#define NILFS_DIRECT_KEY_MIN	0
#define NILFS_DIRECT_KEY_MAX	(NILFS_DIRECT_NBLOCKS - 1)


int nilfs_direct_init(struct nilfs_bmap *);
int nilfs_direct_delete_and_convert(struct nilfs_bmap *, __u64, __u64 *,
				    __u64 *, int);


#endif	/* _NILFS_DIRECT_H */