linux/fs/nilfs2/btnode.h at topic/sof-dev · thesofproject/linux

47 lines (42 loc) · 1.4 KB

/* SPDX-License-Identifier: GPL-2.0+ */
 * 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,
			      blk_opf_t, 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 */

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