]>
Commit | Line | Data |
---|---|---|
1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ | |
2 | /* | |
3 | * Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved. | |
4 | */ | |
5 | ||
6 | #ifndef OCFS2_AOPS_H | |
7 | #define OCFS2_AOPS_H | |
8 | ||
9 | #include <linux/fs.h> | |
10 | ||
11 | handle_t *ocfs2_start_walk_page_trans(struct inode *inode, | |
12 | struct page *page, | |
13 | unsigned from, | |
14 | unsigned to); | |
15 | ||
16 | int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno, | |
17 | struct inode *inode, unsigned int from, | |
18 | unsigned int to, int new); | |
19 | ||
20 | void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages); | |
21 | ||
22 | int walk_page_buffers( handle_t *handle, | |
23 | struct buffer_head *head, | |
24 | unsigned from, | |
25 | unsigned to, | |
26 | int *partial, | |
27 | int (*fn)( handle_t *handle, | |
28 | struct buffer_head *bh)); | |
29 | ||
30 | int ocfs2_write_end_nolock(struct address_space *mapping, | |
31 | loff_t pos, unsigned len, unsigned copied, void *fsdata); | |
32 | ||
33 | typedef enum { | |
34 | OCFS2_WRITE_BUFFER = 0, | |
35 | OCFS2_WRITE_DIRECT, | |
36 | OCFS2_WRITE_MMAP, | |
37 | } ocfs2_write_type_t; | |
38 | ||
39 | int ocfs2_write_begin_nolock(struct address_space *mapping, | |
40 | loff_t pos, unsigned len, ocfs2_write_type_t type, | |
41 | struct page **pagep, void **fsdata, | |
42 | struct buffer_head *di_bh, struct page *mmap_page); | |
43 | ||
44 | int ocfs2_read_inline_data(struct inode *inode, struct page *page, | |
45 | struct buffer_head *di_bh); | |
46 | int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size); | |
47 | ||
48 | int ocfs2_get_block(struct inode *inode, sector_t iblock, | |
49 | struct buffer_head *bh_result, int create); | |
50 | /* all ocfs2_dio_end_io()'s fault */ | |
51 | #define ocfs2_iocb_is_rw_locked(iocb) \ | |
52 | test_bit(0, (unsigned long *)&iocb->private) | |
53 | static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level) | |
54 | { | |
55 | set_bit(0, (unsigned long *)&iocb->private); | |
56 | if (level) | |
57 | set_bit(1, (unsigned long *)&iocb->private); | |
58 | else | |
59 | clear_bit(1, (unsigned long *)&iocb->private); | |
60 | } | |
61 | ||
62 | /* | |
63 | * Using a named enum representing lock types in terms of #N bit stored in | |
64 | * iocb->private, which is going to be used for communication between | |
65 | * ocfs2_dio_end_io() and ocfs2_file_write/read_iter(). | |
66 | */ | |
67 | enum ocfs2_iocb_lock_bits { | |
68 | OCFS2_IOCB_RW_LOCK = 0, | |
69 | OCFS2_IOCB_RW_LOCK_LEVEL, | |
70 | OCFS2_IOCB_NUM_LOCKS | |
71 | }; | |
72 | ||
73 | #define ocfs2_iocb_clear_rw_locked(iocb) \ | |
74 | clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private) | |
75 | #define ocfs2_iocb_rw_locked_level(iocb) \ | |
76 | test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private) | |
77 | ||
78 | #endif /* OCFS2_FILE_H */ |