1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (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 GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public
17 * License along with this program; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 021110-1307, USA.
20 */
21
22 #ifndef OCFS2_AOPS_H
23 #define OCFS2_AOPS_H
24
25 int ocfs2_prepare_write_nolock(struct inode *inode, struct page *page,
26 unsigned from, unsigned to);
27
28 handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
29 struct page *page,
30 unsigned from,
31 unsigned to);
32
33 int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
34 struct inode *inode, unsigned int from,
35 unsigned int to, int new);
36
37 void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages);
38
39 int walk_page_buffers( handle_t *handle,
40 struct buffer_head *head,
41 unsigned from,
42 unsigned to,
43 int *partial,
44 int (*fn)( handle_t *handle,
45 struct buffer_head *bh));
46
47 int ocfs2_write_end_nolock(struct address_space *mapping,
48 loff_t pos, unsigned len, unsigned copied,
49 struct page *page, void *fsdata);
50
51 int ocfs2_write_begin_nolock(struct address_space *mapping,
52 loff_t pos, unsigned len, unsigned flags,
53 struct page **pagep, void **fsdata,
54 struct buffer_head *di_bh, struct page *mmap_page);
55
56 int ocfs2_read_inline_data(struct inode *inode, struct page *page,
57 struct buffer_head *di_bh);
58 int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size);
59
60 /* all ocfs2_dio_end_io()'s fault */
61 #define ocfs2_iocb_is_rw_locked(iocb) \
62 test_bit(0, (unsigned long *)&iocb->private)
63 static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level)
64 {
65 set_bit(0, (unsigned long *)&iocb->private);
66 if (level)
67 set_bit(1, (unsigned long *)&iocb->private);
68 else
69 clear_bit(1, (unsigned long *)&iocb->private);
70 }
71 #define ocfs2_iocb_clear_rw_locked(iocb) \
72 clear_bit(0, (unsigned long *)&iocb->private)
73 #define ocfs2_iocb_rw_locked_level(iocb) \
74 test_bit(1, (unsigned long *)&iocb->private)
75 #endif /* OCFS2_FILE_H */
76
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