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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * ocfs2_buffer_head.h | |
5 | * | |
6 | * Buffer cache handling functions defined | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #ifndef OCFS2_BUFFER_HEAD_IO_H | |
27 | #define OCFS2_BUFFER_HEAD_IO_H | |
28 | ||
29 | #include <linux/buffer_head.h> | |
30 | ||
31 | void ocfs2_end_buffer_io_sync(struct buffer_head *bh, | |
32 | int uptodate); | |
33 | ||
31d33073 | 34 | static inline int ocfs2_read_block(struct inode *inode, |
ccd979bd | 35 | u64 off, |
0fcaa56a | 36 | struct buffer_head **bh); |
ccd979bd MF |
37 | |
38 | int ocfs2_write_block(struct ocfs2_super *osb, | |
39 | struct buffer_head *bh, | |
40 | struct inode *inode); | |
31d33073 | 41 | int ocfs2_read_blocks(struct inode *inode, |
ccd979bd MF |
42 | u64 block, |
43 | int nr, | |
44 | struct buffer_head *bhs[], | |
31d33073 | 45 | int flags); |
da1e9098 JB |
46 | int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block, |
47 | unsigned int nr, struct buffer_head *bhs[]); | |
ccd979bd | 48 | |
d659072f TM |
49 | int ocfs2_write_super_or_backup(struct ocfs2_super *osb, |
50 | struct buffer_head *bh); | |
ccd979bd | 51 | |
d4a8c93c | 52 | #define OCFS2_BH_IGNORE_CACHE 1 |
aa958874 | 53 | #define OCFS2_BH_READAHEAD 8 |
ccd979bd | 54 | |
31d33073 | 55 | static inline int ocfs2_read_block(struct inode *inode, u64 off, |
0fcaa56a | 56 | struct buffer_head **bh) |
ccd979bd MF |
57 | { |
58 | int status = 0; | |
59 | ||
60 | if (bh == NULL) { | |
61 | printk("ocfs2: bh == NULL\n"); | |
62 | status = -EINVAL; | |
63 | goto bail; | |
64 | } | |
65 | ||
d4a8c93c | 66 | status = ocfs2_read_blocks(inode, off, 1, bh, 0); |
ccd979bd MF |
67 | |
68 | bail: | |
69 | return status; | |
70 | } | |
71 | ||
72 | #endif /* OCFS2_BUFFER_HEAD_IO_H */ |