1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * NILFS direct block pointer.
4  *
5  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
6  *
7  * Written by Koji Sato.
8  */
9 
10 #ifndef _NILFS_DIRECT_H
11 #define _NILFS_DIRECT_H
12 
13 #include <linux/types.h>
14 #include <linux/buffer_head.h>
15 #include "bmap.h"
16 
17 
18 #define NILFS_DIRECT_NBLOCKS	(NILFS_BMAP_SIZE / sizeof(__le64) - 1)
19 #define NILFS_DIRECT_KEY_MIN	0
20 #define NILFS_DIRECT_KEY_MAX	(NILFS_DIRECT_NBLOCKS - 1)
21 
22 
23 int nilfs_direct_init(struct nilfs_bmap *);
24 int nilfs_direct_delete_and_convert(struct nilfs_bmap *, __u64, __u64 *,
25 				    __u64 *, int);
26 
27 
28 #endif	/* _NILFS_DIRECT_H */
29