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