projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 328970de | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| ccd979bd MF |
2 | /* -*- mode: c; c-basic-offset: 8; -*- |
| 3 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
| 4 | * | |
| 5 | * Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved. | |
| ccd979bd MF |
6 | */ |
| 7 | ||
| 8 | #ifndef OCFS2_AOPS_H | |
| 9 | #define OCFS2_AOPS_H | |
| 10 | ||
| e2e40f2c | 11 | #include <linux/fs.h> |
| a27bb332 | 12 | |
| 1fabe148 | 13 | handle_t *ocfs2_start_walk_page_trans(struct inode *inode, |
| ccd979bd MF |
14 | struct page *page, |
| 15 | unsigned from, | |
| 16 | unsigned to); | |
| 17 | ||
| 60b11392 MF |
18 | int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno, |
| 19 | struct inode *inode, unsigned int from, | |
| 20 | unsigned int to, int new); | |
| 21 | ||
| 1d410a6e MF |
22 | void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages); |
| 23 | ||
| 60b11392 MF |
24 | int walk_page_buffers( handle_t *handle, |
| 25 | struct buffer_head *head, | |
| 26 | unsigned from, | |
| 27 | unsigned to, | |
| 28 | int *partial, | |
| 29 | int (*fn)( handle_t *handle, | |
| 30 | struct buffer_head *bh)); | |
| 31 | ||
| 7307de80 | 32 | int ocfs2_write_end_nolock(struct address_space *mapping, |
| 07f38d97 | 33 | loff_t pos, unsigned len, unsigned copied, void *fsdata); |
| 7307de80 | 34 | |
| c1ad1e3c RD |
35 | typedef enum { |
| 36 | OCFS2_WRITE_BUFFER = 0, | |
| 37 | OCFS2_WRITE_DIRECT, | |
| 38 | OCFS2_WRITE_MMAP, | |
| 39 | } ocfs2_write_type_t; | |
| 40 | ||
| 41 | int ocfs2_write_begin_nolock(struct address_space *mapping, | |
| 42 | loff_t pos, unsigned len, ocfs2_write_type_t type, | |
| 7307de80 MF |
43 | struct page **pagep, void **fsdata, |
| 44 | struct buffer_head *di_bh, struct page *mmap_page); | |
| 45 | ||
| 1afc32b9 MF |
46 | int ocfs2_read_inline_data(struct inode *inode, struct page *page, |
| 47 | struct buffer_head *di_bh); | |
| 48 | int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size); | |
| 49 | ||
| 6f70fa51 TM |
50 | int ocfs2_get_block(struct inode *inode, sector_t iblock, |
| 51 | struct buffer_head *bh_result, int create); | |
| ccd979bd MF |
52 | /* all ocfs2_dio_end_io()'s fault */ |
| 53 | #define ocfs2_iocb_is_rw_locked(iocb) \ | |
| 54 | test_bit(0, (unsigned long *)&iocb->private) | |
| 7cdfc3a1 MF |
55 | static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level) |
| 56 | { | |
| 57 | set_bit(0, (unsigned long *)&iocb->private); | |
| 58 | if (level) | |
| 59 | set_bit(1, (unsigned long *)&iocb->private); | |
| 60 | else | |
| 61 | clear_bit(1, (unsigned long *)&iocb->private); | |
| 62 | } | |
| 39c99f12 TY |
63 | |
| 64 | /* | |
| 65 | * Using a named enum representing lock types in terms of #N bit stored in | |
| 25985edc | 66 | * iocb->private, which is going to be used for communication between |
| 1202d4ba | 67 | * ocfs2_dio_end_io() and ocfs2_file_write/read_iter(). |
| 39c99f12 TY |
68 | */ |
| 69 | enum ocfs2_iocb_lock_bits { | |
| 70 | OCFS2_IOCB_RW_LOCK = 0, | |
| 71 | OCFS2_IOCB_RW_LOCK_LEVEL, | |
| 39c99f12 TY |
72 | OCFS2_IOCB_NUM_LOCKS |
| 73 | }; | |
| 74 | ||
| ccd979bd | 75 | #define ocfs2_iocb_clear_rw_locked(iocb) \ |
| 39c99f12 | 76 | clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private) |
| 7cdfc3a1 | 77 | #define ocfs2_iocb_rw_locked_level(iocb) \ |
| 39c99f12 | 78 | test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private) |
| a11f7e63 | 79 | |
| ccd979bd | 80 | #endif /* OCFS2_FILE_H */ |