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| 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 | |
| 72 | /* |
| 73 | * Using a named enum representing lock types in terms of #N bit stored in |
| 74 | * iocb->private, which is going to be used for communication between |
| 75 | * ocfs2_dio_end_io() and ocfs2_file_aio_write/read(). |
| 76 | */ |
| 77 | enum ocfs2_iocb_lock_bits { |
| 78 | OCFS2_IOCB_RW_LOCK = 0, |
| 79 | OCFS2_IOCB_RW_LOCK_LEVEL, |
| 80 | OCFS2_IOCB_SEM, |
| 81 | OCFS2_IOCB_NUM_LOCKS |
| 82 | }; |
| 83 | |
| 84 | #define ocfs2_iocb_clear_rw_locked(iocb) \ |
| 85 | clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private) |
| 86 | #define ocfs2_iocb_rw_locked_level(iocb) \ |
| 87 | test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private) |
| 88 | #define ocfs2_iocb_set_sem_locked(iocb) \ |
| 89 | set_bit(OCFS2_IOCB_SEM, (unsigned long *)&iocb->private) |
| 90 | #define ocfs2_iocb_clear_sem_locked(iocb) \ |
| 91 | clear_bit(OCFS2_IOCB_SEM, (unsigned long *)&iocb->private) |
| 92 | #define ocfs2_iocb_is_sem_locked(iocb) \ |
| 93 | test_bit(OCFS2_IOCB_SEM, (unsigned long *)&iocb->private) |
| 94 | #endif /* OCFS2_FILE_H */ |
| 95 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9
