linux/fs/nilfs2/dat.h
Ryusuke Konishi 8707df3847 nilfs2: separate read method of meta data files on super root block
Will displace nilfs_mdt_read_inode_direct function with an individual
read method: nilfs_dat_read, nilfs_sufile_read, nilfs_cpfile_read.

This provides the opportunity to initialize local variables of each
metadata file after reading the inode.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20 10:05:48 +09:00

60 lines
2.4 KiB
C

/*
* dat.h - NILFS disk address translation.
*
* Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Written by Koji Sato <koji@osrg.net>.
*/
#ifndef _NILFS_DAT_H
#define _NILFS_DAT_H
#include <linux/types.h>
#include <linux/buffer_head.h>
#include <linux/fs.h>
struct nilfs_palloc_req;
int nilfs_dat_translate(struct inode *, __u64, sector_t *);
int nilfs_dat_prepare_alloc(struct inode *, struct nilfs_palloc_req *);
void nilfs_dat_commit_alloc(struct inode *, struct nilfs_palloc_req *);
void nilfs_dat_abort_alloc(struct inode *, struct nilfs_palloc_req *);
int nilfs_dat_prepare_start(struct inode *, struct nilfs_palloc_req *);
void nilfs_dat_commit_start(struct inode *, struct nilfs_palloc_req *,
sector_t);
int nilfs_dat_prepare_end(struct inode *, struct nilfs_palloc_req *);
void nilfs_dat_commit_end(struct inode *, struct nilfs_palloc_req *, int);
void nilfs_dat_abort_end(struct inode *, struct nilfs_palloc_req *);
int nilfs_dat_prepare_update(struct inode *, struct nilfs_palloc_req *,
struct nilfs_palloc_req *);
void nilfs_dat_commit_update(struct inode *, struct nilfs_palloc_req *,
struct nilfs_palloc_req *, int);
void nilfs_dat_abort_update(struct inode *, struct nilfs_palloc_req *,
struct nilfs_palloc_req *);
int nilfs_dat_mark_dirty(struct inode *, __u64);
int nilfs_dat_freev(struct inode *, __u64 *, size_t);
int nilfs_dat_move(struct inode *, __u64, sector_t);
ssize_t nilfs_dat_get_vinfo(struct inode *, void *, unsigned, size_t);
int nilfs_dat_read(struct inode *dat, struct nilfs_inode *raw_inode);
struct inode *nilfs_dat_new(struct the_nilfs *nilfs, size_t entry_size);
#endif /* _NILFS_DAT_H */