projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 328970de | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| fa60ce2c | 2 | /* |
| ccd979bd | 3 | * Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved. |
| ccd979bd MF |
4 | */ |
| 5 | ||
| 6 | #ifndef OCFS2_AOPS_H | |
| 7 | #define OCFS2_AOPS_H | |
| 8 | ||
| e2e40f2c | 9 | #include <linux/fs.h> |
| a27bb332 | 10 | |
| 0313500d | 11 | int ocfs2_map_folio_blocks(struct folio *folio, u64 *p_blkno, |
| 60b11392 MF |
12 | struct inode *inode, unsigned int from, |
| 13 | unsigned int to, int new); | |
| 14 | ||
| 7e119cff | 15 | void ocfs2_unlock_and_free_folios(struct folio **folios, int num_folios); |
| 1d410a6e | 16 | |
| 60b11392 MF |
17 | int walk_page_buffers( handle_t *handle, |
| 18 | struct buffer_head *head, | |
| 19 | unsigned from, | |
| 20 | unsigned to, | |
| 21 | int *partial, | |
| 22 | int (*fn)( handle_t *handle, | |
| 23 | struct buffer_head *bh)); | |
| 24 | ||
| 7307de80 | 25 | int ocfs2_write_end_nolock(struct address_space *mapping, |
| 07f38d97 | 26 | loff_t pos, unsigned len, unsigned copied, void *fsdata); |
| 7307de80 | 27 | |
| c1ad1e3c RD |
28 | typedef enum { |
| 29 | OCFS2_WRITE_BUFFER = 0, | |
| 30 | OCFS2_WRITE_DIRECT, | |
| 31 | OCFS2_WRITE_MMAP, | |
| 32 | } ocfs2_write_type_t; | |
| 33 | ||
| 34 | int ocfs2_write_begin_nolock(struct address_space *mapping, | |
| b4f3b496 MWO |
35 | loff_t pos, unsigned len, ocfs2_write_type_t type, |
| 36 | struct folio **foliop, void **fsdata, | |
| 37 | struct buffer_head *di_bh, struct folio *mmap_folio); | |
| 7307de80 | 38 | |
| 03902e65 | 39 | int ocfs2_read_inline_data(struct inode *inode, struct folio *folio, |
| 1afc32b9 MF |
40 | struct buffer_head *di_bh); |
| 41 | int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size); | |
| 42 | ||
| 6f70fa51 TM |
43 | int ocfs2_get_block(struct inode *inode, sector_t iblock, |
| 44 | struct buffer_head *bh_result, int create); | |
| ccd979bd MF |
45 | /* all ocfs2_dio_end_io()'s fault */ |
| 46 | #define ocfs2_iocb_is_rw_locked(iocb) \ | |
| 47 | test_bit(0, (unsigned long *)&iocb->private) | |
| 7cdfc3a1 MF |
48 | static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level) |
| 49 | { | |
| 50 | set_bit(0, (unsigned long *)&iocb->private); | |
| 51 | if (level) | |
| 52 | set_bit(1, (unsigned long *)&iocb->private); | |
| 53 | else | |
| 54 | clear_bit(1, (unsigned long *)&iocb->private); | |
| 55 | } | |
| 39c99f12 TY |
56 | |
| 57 | /* | |
| 58 | * Using a named enum representing lock types in terms of #N bit stored in | |
| 25985edc | 59 | * iocb->private, which is going to be used for communication between |
| 1202d4ba | 60 | * ocfs2_dio_end_io() and ocfs2_file_write/read_iter(). |
| 39c99f12 TY |
61 | */ |
| 62 | enum ocfs2_iocb_lock_bits { | |
| 63 | OCFS2_IOCB_RW_LOCK = 0, | |
| 64 | OCFS2_IOCB_RW_LOCK_LEVEL, | |
| 39c99f12 TY |
65 | OCFS2_IOCB_NUM_LOCKS |
| 66 | }; | |
| 67 | ||
| adc77b19 DA |
68 | #define ocfs2_iocb_init_rw_locked(iocb) \ |
| 69 | (iocb->private = NULL) | |
| ccd979bd | 70 | #define ocfs2_iocb_clear_rw_locked(iocb) \ |
| 39c99f12 | 71 | clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private) |
| 7cdfc3a1 | 72 | #define ocfs2_iocb_rw_locked_level(iocb) \ |
| 39c99f12 | 73 | test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private) |
| a11f7e63 | 74 | |
| ccd979bd | 75 | #endif /* OCFS2_FILE_H */ |