fs: kill block_prepare_write
[linux-2.6.git] / fs / ocfs2 / aops.h
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 handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
26                                                          struct page *page,
27                                                          unsigned from,
28                                                          unsigned to);
29
30 int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
31                           struct inode *inode, unsigned int from,
32                           unsigned int to, int new);
33
34 void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages);
35
36 int walk_page_buffers(  handle_t *handle,
37                         struct buffer_head *head,
38                         unsigned from,
39                         unsigned to,
40                         int *partial,
41                         int (*fn)(      handle_t *handle,
42                                         struct buffer_head *bh));
43
44 int ocfs2_write_end_nolock(struct address_space *mapping,
45                            loff_t pos, unsigned len, unsigned copied,
46                            struct page *page, void *fsdata);
47
48 int ocfs2_write_begin_nolock(struct file *filp,
49                              struct address_space *mapping,
50                              loff_t pos, unsigned len, unsigned flags,
51                              struct page **pagep, void **fsdata,
52                              struct buffer_head *di_bh, struct page *mmap_page);
53
54 int ocfs2_read_inline_data(struct inode *inode, struct page *page,
55                            struct buffer_head *di_bh);
56 int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size);
57
58 int ocfs2_get_block(struct inode *inode, sector_t iblock,
59                     struct buffer_head *bh_result, int create);
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 */