btnode.h (1431B)
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 */ 26struct nilfs_btnode_chkey_ctxt { 27 __u64 oldkey; 28 __u64 newkey; 29 struct buffer_head *bh; 30 struct buffer_head *newbh; 31}; 32 33void nilfs_init_btnc_inode(struct inode *btnc_inode); 34void nilfs_btnode_cache_clear(struct address_space *); 35struct buffer_head *nilfs_btnode_create_block(struct address_space *btnc, 36 __u64 blocknr); 37int nilfs_btnode_submit_block(struct address_space *, __u64, sector_t, int, 38 int, struct buffer_head **, sector_t *); 39void nilfs_btnode_delete(struct buffer_head *); 40int nilfs_btnode_prepare_change_key(struct address_space *, 41 struct nilfs_btnode_chkey_ctxt *); 42void nilfs_btnode_commit_change_key(struct address_space *, 43 struct nilfs_btnode_chkey_ctxt *); 44void nilfs_btnode_abort_change_key(struct address_space *, 45 struct nilfs_btnode_chkey_ctxt *); 46 47#endif /* _NILFS_BTNODE_H */