[mirror_ubuntu-artful-kernel.git] / fs / nilfs2 / ifile.h

/*
 * ifile.h - NILFS inode file
 *
 * 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.
 *
 * Written by Amagai Yoshiji.
 * Revised by Ryusuke Konishi.
 *
 */

#ifndef _NILFS_IFILE_H
#define _NILFS_IFILE_H

#include <linux/fs.h>
#include <linux/buffer_head.h>
#include "mdt.h"
#include "alloc.h"


static inline struct nilfs_inode *
nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh)
{
	void *kaddr = kmap(ibh->b_page);

	return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr);
}

static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino,
					   struct buffer_head *ibh)
{
	kunmap(ibh->b_page);
}

int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **);
int nilfs_ifile_delete_inode(struct inode *, ino_t);
int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **);

int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *);

int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root,
		     size_t inode_size, struct nilfs_inode *raw_inode,
		     struct inode **inodep);

#endif	/* _NILFS_IFILE_H */
Commit	Line	Data
43bfb45e RK	1	/*
	2	* ifile.h - NILFS inode file
	3	*
	4	* Copyright (C) 2006-2008 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	*
4b420ab4 RK	16	* Written by Amagai Yoshiji.
4b420ab4 RK	17	* Revised by Ryusuke Konishi.
43bfb45e RK	18	*
	19	*/
	20
	21	#ifndef _NILFS_IFILE_H
	22	#define _NILFS_IFILE_H
	23
	24	#include <linux/fs.h>
	25	#include <linux/buffer_head.h>
43bfb45e RK	26	#include "mdt.h"
	27	#include "alloc.h"
	28
43bfb45e RK	29
	30	static inline struct nilfs_inode *
	31	nilfs_ifile_map_inode(struct inode ifile, ino_t ino, struct buffer_head ibh)
	32	{
	33	void *kaddr = kmap(ibh->b_page);
4ad364ca	34
43bfb45e RK	35	return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr);
	36	}
	37
	38	static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino,
	39	struct buffer_head *ibh)
	40	{
	41	kunmap(ibh->b_page);
	42	}
	43
	44	int nilfs_ifile_create_inode(struct inode , ino_t , struct buffer_head **);
	45	int nilfs_ifile_delete_inode(struct inode *, ino_t);
	46	int nilfs_ifile_get_inode_block(struct inode , ino_t, struct buffer_head *);
	47
c7ef972c VD	48	int nilfs_ifile_count_free_inodes(struct inode , u64 , u64 *);
c7ef972c VD	49
f1e89c86 RK	50	int nilfs_ifile_read(struct super_block sb, struct nilfs_root root,
	51	size_t inode_size, struct nilfs_inode *raw_inode,
	52	struct inode **inodep);
79739565	53
43bfb45e	54	#endif /* _NILFS_IFILE_H */