]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - fs/nilfs2/direct.h
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 * 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
20 * Written by Koji Sato <koji@osrg.net>.
23 #ifndef _NILFS_DIRECT_H
24 #define _NILFS_DIRECT_H
26 #include <linux/types.h>
27 #include <linux/buffer_head.h>
34 * struct nilfs_direct_node - direct node
38 struct nilfs_direct_node
{
44 * struct nilfs_direct - direct mapping
45 * @d_bmap: bmap structure
48 struct nilfs_bmap d_bmap
;
52 #define NILFS_DIRECT_NBLOCKS (NILFS_BMAP_SIZE / sizeof(__le64) - 1)
53 #define NILFS_DIRECT_KEY_MIN 0
54 #define NILFS_DIRECT_KEY_MAX (NILFS_DIRECT_NBLOCKS - 1)
57 int nilfs_direct_init(struct nilfs_bmap
*);
58 int nilfs_direct_delete_and_convert(struct nilfs_bmap
*, __u64
, __u64
*,
62 #endif /* _NILFS_DIRECT_H */