| Ryusuke Konishi | a60be98 | 2009-04-06 19:01:25 -0700 | [diff] [blame] | 1 | /* |
| 2 | * btnode.h - NILFS B-tree node cache |
| 3 | * |
| 4 | * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | * |
| 20 | * Written by Seiji Kihara <kihara@osrg.net> |
| 21 | * Revised by Ryusuke Konishi <ryusuke@osrg.net> |
| 22 | */ |
| 23 | |
| 24 | #ifndef _NILFS_BTNODE_H |
| 25 | #define _NILFS_BTNODE_H |
| 26 | |
| 27 | #include <linux/types.h> |
| 28 | #include <linux/buffer_head.h> |
| 29 | #include <linux/fs.h> |
| 30 | #include <linux/backing-dev.h> |
| 31 | |
| 32 | |
| 33 | struct nilfs_btnode_chkey_ctxt { |
| 34 | __u64 oldkey; |
| 35 | __u64 newkey; |
| 36 | struct buffer_head *bh; |
| 37 | struct buffer_head *newbh; |
| 38 | }; |
| 39 | |
| 40 | void nilfs_btnode_cache_init_once(struct address_space *); |
| 41 | void nilfs_btnode_cache_init(struct address_space *); |
| 42 | void nilfs_btnode_cache_clear(struct address_space *); |
| 43 | int nilfs_btnode_submit_block(struct address_space *, __u64, sector_t, |
| 44 | struct buffer_head **, int); |
| 45 | int nilfs_btnode_get(struct address_space *, __u64, sector_t, |
| 46 | struct buffer_head **, int); |
| 47 | void nilfs_btnode_delete(struct buffer_head *); |
| 48 | int nilfs_btnode_prepare_change_key(struct address_space *, |
| 49 | struct nilfs_btnode_chkey_ctxt *); |
| 50 | void nilfs_btnode_commit_change_key(struct address_space *, |
| 51 | struct nilfs_btnode_chkey_ctxt *); |
| 52 | void nilfs_btnode_abort_change_key(struct address_space *, |
| 53 | struct nilfs_btnode_chkey_ctxt *); |
| 54 | |
| 55 | #define nilfs_btnode_mark_dirty(bh) nilfs_mark_buffer_dirty(bh) |
| 56 | |
| 57 | |
| 58 | #endif /* _NILFS_BTNODE_H */ |