2 * direct.h - NILFS direct block pointer.
4 * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * Written by Koji Sato.
19 #ifndef _NILFS_DIRECT_H
20 #define _NILFS_DIRECT_H
22 #include <linux/types.h>
23 #include <linux/buffer_head.h>
28 * struct nilfs_direct_node - direct node
32 struct nilfs_direct_node
{
37 #define NILFS_DIRECT_NBLOCKS (NILFS_BMAP_SIZE / sizeof(__le64) - 1)
38 #define NILFS_DIRECT_KEY_MIN 0
39 #define NILFS_DIRECT_KEY_MAX (NILFS_DIRECT_NBLOCKS - 1)
42 int nilfs_direct_init(struct nilfs_bmap
*);
43 int nilfs_direct_delete_and_convert(struct nilfs_bmap
*, __u64
, __u64
*,
47 #endif /* _NILFS_DIRECT_H */
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