linux/fs/nilfs2/btnode.h
Bart Van Assche ed4512590b fs/nilfs2: Use the enum req_op and blk_opf_t types
Improve static type checking by using the enum req_op type for variables
that represent a request operation and the new blk_opf_t type for
variables that represent request flags. Combine the 'mode' and
'mode_flags' arguments of nilfs_btnode_submit_block into a single
argument 'opf'.

Reviewed-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20220714180729.1065367-59-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-14 12:14:33 -06:00

48 lines
1.4 KiB
C

/* 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 */