/* SPDX-License-Identifier: GPL-2.0+ */
|
/*
|
* btnode.h - NILFS B-tree node cache
|
*
|
* Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
|
*
|
* Written by Seiji Kihara.
|
* Revised by Ryusuke Konishi.
|
*/
|
|
#ifndef _NILFS_BTNODE_H
|
#define _NILFS_BTNODE_H
|
|
#include <linux/types.h>
|
#include <linux/buffer_head.h>
|
#include <linux/fs.h>
|
#include <linux/backing-dev.h>
|
|
/**
|
* struct nilfs_btnode_chkey_ctxt - change key context
|
* @oldkey: old key of block's moving content
|
* @newkey: new key for block's content
|
* @bh: buffer head of old buffer
|
* @newbh: buffer head of new buffer
|
*/
|
struct nilfs_btnode_chkey_ctxt {
|
__u64 oldkey;
|
__u64 newkey;
|
struct buffer_head *bh;
|
struct buffer_head *newbh;
|
};
|
|
void nilfs_init_btnc_inode(struct inode *btnc_inode);
|
void nilfs_btnode_cache_clear(struct address_space *);
|
struct buffer_head *nilfs_btnode_create_block(struct address_space *btnc,
|
__u64 blocknr);
|
int nilfs_btnode_submit_block(struct address_space *, __u64, sector_t, int,
|
int, struct buffer_head **, sector_t *);
|
void nilfs_btnode_delete(struct buffer_head *);
|
int nilfs_btnode_prepare_change_key(struct address_space *,
|
struct nilfs_btnode_chkey_ctxt *);
|
void nilfs_btnode_commit_change_key(struct address_space *,
|
struct nilfs_btnode_chkey_ctxt *);
|
void nilfs_btnode_abort_change_key(struct address_space *,
|
struct nilfs_btnode_chkey_ctxt *);
|
|
#endif /* _NILFS_BTNODE_H */
|
