ocfs2: keep the trace point consistent with the function name
[muen/linux.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 #include <linux/fs.h>
26
27 handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
28                                                          struct page *page,
29                                                          unsigned from,
30                                                          unsigned to);
31
32 int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
33                           struct inode *inode, unsigned int from,
34                           unsigned int to, int new);
35
36 void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages);
37
38 int walk_page_buffers(  handle_t *handle,
39                         struct buffer_head *head,
40                         unsigned from,
41                         unsigned to,
42                         int *partial,
43                         int (*fn)(      handle_t *handle,
44                                         struct buffer_head *bh));
45
46 int ocfs2_write_end_nolock(struct address_space *mapping,
47                            loff_t pos, unsigned len, unsigned copied, void *fsdata);
48
49 typedef enum {
50         OCFS2_WRITE_BUFFER = 0,
51         OCFS2_WRITE_DIRECT,
52         OCFS2_WRITE_MMAP,
53 } ocfs2_write_type_t;
54
55 int ocfs2_write_begin_nolock(struct address_space *mapping,
56                              loff_t pos, unsigned len, ocfs2_write_type_t type,
57                              struct page **pagep, void **fsdata,
58                              struct buffer_head *di_bh, struct page *mmap_page);
59
60 int ocfs2_read_inline_data(struct inode *inode, struct page *page,
61                            struct buffer_head *di_bh);
62 int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size);
63
64 int ocfs2_get_block(struct inode *inode, sector_t iblock,
65                     struct buffer_head *bh_result, int create);
66 /* all ocfs2_dio_end_io()'s fault */
67 #define ocfs2_iocb_is_rw_locked(iocb) \
68         test_bit(0, (unsigned long *)&iocb->private)
69 static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level)
70 {
71         set_bit(0, (unsigned long *)&iocb->private);
72         if (level)
73                 set_bit(1, (unsigned long *)&iocb->private);
74         else
75                 clear_bit(1, (unsigned long *)&iocb->private);
76 }
77
78 /*
79  * Using a named enum representing lock types in terms of #N bit stored in
80  * iocb->private, which is going to be used for communication between
81  * ocfs2_dio_end_io() and ocfs2_file_write/read_iter().
82  */
83 enum ocfs2_iocb_lock_bits {
84         OCFS2_IOCB_RW_LOCK = 0,
85         OCFS2_IOCB_RW_LOCK_LEVEL,
86         OCFS2_IOCB_NUM_LOCKS
87 };
88
89 #define ocfs2_iocb_clear_rw_locked(iocb) \
90         clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private)
91 #define ocfs2_iocb_rw_locked_level(iocb) \
92         test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private)
93
94 #endif /* OCFS2_FILE_H */