1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
---|---|
2 | /* |
3 | * NILFS B-tree node cache |
4 | * |
5 | * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. |
6 | * |
7 | * Written by Seiji Kihara. |
8 | * Revised by Ryusuke Konishi. |
9 | */ |
10 | |
11 | #ifndef _NILFS_BTNODE_H |
12 | #define _NILFS_BTNODE_H |
13 | |
14 | #include <linux/types.h> |
15 | #include <linux/buffer_head.h> |
16 | #include <linux/fs.h> |
17 | #include <linux/backing-dev.h> |
18 | |
19 | /** |
20 | * struct nilfs_btnode_chkey_ctxt - change key context |
21 | * @oldkey: old key of block's moving content |
22 | * @newkey: new key for block's content |
23 | * @bh: buffer head of old buffer |
24 | * @newbh: buffer head of new buffer |
25 | */ |
26 | struct nilfs_btnode_chkey_ctxt { |
27 | __u64 oldkey; |
28 | __u64 newkey; |
29 | struct buffer_head *bh; |
30 | struct buffer_head *newbh; |
31 | }; |
32 | |
33 | void nilfs_init_btnc_inode(struct inode *btnc_inode); |
34 | void nilfs_btnode_cache_clear(struct address_space *); |
35 | struct buffer_head *nilfs_btnode_create_block(struct address_space *btnc, |
36 | __u64 blocknr); |
37 | int nilfs_btnode_submit_block(struct address_space *, __u64, sector_t, |
38 | blk_opf_t, struct buffer_head **, sector_t *); |
39 | void nilfs_btnode_delete(struct buffer_head *); |
40 | int nilfs_btnode_prepare_change_key(struct address_space *, |
41 | struct nilfs_btnode_chkey_ctxt *); |
42 | void nilfs_btnode_commit_change_key(struct address_space *, |
43 | struct nilfs_btnode_chkey_ctxt *); |
44 | void nilfs_btnode_abort_change_key(struct address_space *, |
45 | struct nilfs_btnode_chkey_ctxt *); |
46 | |
47 | #endif /* _NILFS_BTNODE_H */ |
48 |