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1/*
2 * sb.h - NILFS on-memory super block structure.
3 *
4 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
5 *
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.
10 *
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.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 *
20 * Written by Ryusuke Konishi <ryusuke@osrg.net>
21 *
22 */
23
24#ifndef _NILFS_SB
25#define _NILFS_SB
26
27#include <linux/types.h>
28#include <linux/fs.h>
29
30struct the_nilfs;
31
32/*
33 * NILFS super-block data in memory
34 */
35struct nilfs_sb_info {
36 /* Fundamental members */
37 struct super_block *s_super; /* reverse pointer to super_block */
38 struct the_nilfs *s_nilfs;
39};
40
41static inline struct nilfs_sb_info *NILFS_SB(struct super_block *sb)
42{
43 return sb->s_fs_info;
44}
45
46#endif /* _NILFS_SB */