projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| ccd979bd MF |
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 | ||
| 53013cba MF |
25 | int ocfs2_prepare_write_nolock(struct inode *inode, struct page *page, |
| 26 | unsigned from, unsigned to); | |
| ccd979bd | 27 | |
| 1fabe148 | 28 | handle_t *ocfs2_start_walk_page_trans(struct inode *inode, |
| ccd979bd MF |
29 | struct page *page, |
| 30 | unsigned from, | |
| 31 | unsigned to); | |
| 32 | ||
| 9517bac6 MF |
33 | struct ocfs2_write_ctxt; |
| 34 | typedef int (ocfs2_page_writer)(struct inode *, struct ocfs2_write_ctxt *, | |
| 35 | u64 *, unsigned int *, unsigned int *); | |
| 36 | ||
| 37 | ssize_t ocfs2_buffered_write_cluster(struct file *file, loff_t pos, | |
| 38 | size_t count, ocfs2_page_writer *actor, | |
| 39 | void *priv); | |
| 40 | ||
| 41 | struct ocfs2_write_ctxt { | |
| 42 | size_t w_count; | |
| 43 | loff_t w_pos; | |
| 44 | u32 w_cpos; | |
| 45 | unsigned int w_finished_copy; | |
| 46 | ||
| 47 | /* This is true if page_size > cluster_size */ | |
| 48 | unsigned int w_large_pages; | |
| 49 | ||
| 50 | /* Filler callback and private data */ | |
| 51 | ocfs2_page_writer *w_write_data_page; | |
| 52 | void *w_private; | |
| 53 | ||
| 54 | /* Only valid for the filler callback */ | |
| 55 | struct page *w_this_page; | |
| 56 | unsigned int w_this_page_new; | |
| 57 | }; | |
| 58 | ||
| 59 | struct ocfs2_buffered_write_priv { | |
| 60 | char *b_src_buf; | |
| 61 | const struct iovec *b_cur_iov; /* Current iovec */ | |
| 62 | size_t b_cur_off; /* Offset in the | |
| 63 | * current iovec */ | |
| 64 | }; | |
| 65 | int ocfs2_map_and_write_user_data(struct inode *inode, | |
| 66 | struct ocfs2_write_ctxt *wc, | |
| 67 | u64 *p_blkno, | |
| 68 | unsigned int *ret_from, | |
| 69 | unsigned int *ret_to); | |
| 70 | ||
| ccd979bd MF |
71 | /* all ocfs2_dio_end_io()'s fault */ |
| 72 | #define ocfs2_iocb_is_rw_locked(iocb) \ | |
| 73 | test_bit(0, (unsigned long *)&iocb->private) | |
| 74 | #define ocfs2_iocb_set_rw_locked(iocb) \ | |
| 75 | set_bit(0, (unsigned long *)&iocb->private) | |
| 76 | #define ocfs2_iocb_clear_rw_locked(iocb) \ | |
| 77 | clear_bit(0, (unsigned long *)&iocb->private) | |
| 78 | ||
| 79 | #endif /* OCFS2_FILE_H */ |