projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 65b3da37 | 1 | /* |
| ad723875 | 2 | * Copyright (c) 2005-2006 Silicon Graphics, Inc. |
| 7b718769 | 3 | * All Rights Reserved. |
| 65b3da37 | 4 | * |
| 7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as | |
| 65b3da37 CH |
7 | * published by the Free Software Foundation. |
| 8 | * | |
| 7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 65b3da37 | 13 | * |
| 7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, | |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 65b3da37 CH |
17 | */ |
| 18 | #ifndef __XFS_AOPS_H__ | |
| 19 | #define __XFS_AOPS_H__ | |
| 20 | ||
| 65b3da37 CH |
21 | extern mempool_t *xfs_ioend_pool; |
| 22 | ||
| a206c817 CH |
23 | /* |
| 24 | * Types of I/O for bmap clustering and I/O completion tracking. | |
| 25 | */ | |
| 26 | enum { | |
| 0d882a36 AR |
27 | XFS_IO_DIRECT = 0, /* special case for direct I/O ioends */ |
| 28 | XFS_IO_DELALLOC, /* covers delalloc region */ | |
| 29 | XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */ | |
| 30 | XFS_IO_OVERWRITE, /* covers already allocated extent */ | |
| a206c817 CH |
31 | }; |
| 32 | ||
| 33 | #define XFS_IO_TYPES \ | |
| 34 | { 0, "" }, \ | |
| 0d882a36 AR |
35 | { XFS_IO_DELALLOC, "delalloc" }, \ |
| 36 | { XFS_IO_UNWRITTEN, "unwritten" }, \ | |
| 37 | { XFS_IO_OVERWRITE, "overwrite" } | |
| a206c817 | 38 | |
| f6d6d4fc CH |
39 | /* |
| 40 | * xfs_ioend struct manages large extent writes for XFS. | |
| 41 | * It can manage several multi-page bio's at once. | |
| 42 | */ | |
| 65b3da37 | 43 | typedef struct xfs_ioend { |
| f6d6d4fc CH |
44 | struct xfs_ioend *io_list; /* next ioend in chain */ |
| 45 | unsigned int io_type; /* delalloc / unwritten */ | |
| 7d04a335 | 46 | int io_error; /* I/O error code */ |
| 65b3da37 | 47 | atomic_t io_remaining; /* hold count */ |
| c859cdd1 | 48 | unsigned int io_isasync : 1; /* needs aio_complete */ |
| 281627df | 49 | unsigned int io_isdirect : 1;/* direct I/O */ |
| b677c210 | 50 | struct inode *io_inode; /* file being written to */ |
| c1a073bd | 51 | struct buffer_head *io_buffer_head;/* buffer linked list head */ |
| f6d6d4fc | 52 | struct buffer_head *io_buffer_tail;/* buffer linked list tail */ |
| 65b3da37 CH |
53 | size_t io_size; /* size of the extent */ |
| 54 | xfs_off_t io_offset; /* offset in the file */ | |
| 55 | struct work_struct io_work; /* xfsdatad work queue */ | |
| 281627df | 56 | struct xfs_trans *io_append_trans;/* xact. for size update */ |
| 40e2e973 CH |
57 | struct kiocb *io_iocb; |
| 58 | int io_result; | |
| 65b3da37 CH |
59 | } xfs_ioend_t; |
| 60 | ||
| f5e54d6e | 61 | extern const struct address_space_operations xfs_address_space_operations; |
| c2536668 | 62 | extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int); |
| f6d6d4fc | 63 | |
| 20cb52eb | 64 | extern void xfs_count_page_state(struct page *, int *, int *); |
| 0b1b213f | 65 | |
| ad723875 | 66 | #endif /* __XFS_AOPS_H__ */ |