Christoph Hellwig | 65b3da3 | 2005-09-05 08:18:12 +1000 | [diff] [blame] | 1 | /* |
Nathan Scott | ad72387 | 2006-06-09 15:29:12 +1000 | [diff] [blame] | 2 | * Copyright (c) 2005-2006 Silicon Graphics, Inc. |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 3 | * All Rights Reserved. |
Christoph Hellwig | 65b3da3 | 2005-09-05 08:18:12 +1000 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Christoph Hellwig | 65b3da3 | 2005-09-05 08:18:12 +1000 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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. |
Christoph Hellwig | 65b3da3 | 2005-09-05 08:18:12 +1000 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Christoph Hellwig | 65b3da3 | 2005-09-05 08:18:12 +1000 | [diff] [blame] | 17 | */ |
| 18 | #ifndef __XFS_AOPS_H__ |
| 19 | #define __XFS_AOPS_H__ |
| 20 | |
Christoph Hellwig | 65b3da3 | 2005-09-05 08:18:12 +1000 | [diff] [blame] | 21 | extern mempool_t *xfs_ioend_pool; |
| 22 | |
Christoph Hellwig | f6d6d4f | 2006-01-11 15:40:13 +1100 | [diff] [blame] | 23 | /* |
Christoph Hellwig | a206c81 | 2010-12-10 08:42:20 +0000 | [diff] [blame] | 24 | * Types of I/O for bmap clustering and I/O completion tracking. |
| 25 | */ |
| 26 | enum { |
| 27 | IO_DIRECT = 0, /* special case for direct I/O ioends */ |
| 28 | IO_DELALLOC, /* mapping covers delalloc region */ |
| 29 | IO_UNWRITTEN, /* mapping covers allocated but uninitialized data */ |
| 30 | IO_OVERWRITE, /* mapping covers already allocated extent */ |
| 31 | }; |
| 32 | |
| 33 | #define XFS_IO_TYPES \ |
| 34 | { 0, "" }, \ |
| 35 | { IO_DELALLOC, "delalloc" }, \ |
| 36 | { IO_UNWRITTEN, "unwritten" }, \ |
| 37 | { IO_OVERWRITE, "overwrite" } |
| 38 | |
| 39 | /* |
Christoph Hellwig | f6d6d4f | 2006-01-11 15:40:13 +1100 | [diff] [blame] | 40 | * xfs_ioend struct manages large extent writes for XFS. |
| 41 | * It can manage several multi-page bio's at once. |
| 42 | */ |
Christoph Hellwig | 65b3da3 | 2005-09-05 08:18:12 +1000 | [diff] [blame] | 43 | typedef struct xfs_ioend { |
Christoph Hellwig | f6d6d4f | 2006-01-11 15:40:13 +1100 | [diff] [blame] | 44 | struct xfs_ioend *io_list; /* next ioend in chain */ |
| 45 | unsigned int io_type; /* delalloc / unwritten */ |
Nathan Scott | 7d04a33 | 2006-06-09 14:58:38 +1000 | [diff] [blame] | 46 | int io_error; /* I/O error code */ |
Christoph Hellwig | 65b3da3 | 2005-09-05 08:18:12 +1000 | [diff] [blame] | 47 | atomic_t io_remaining; /* hold count */ |
Christoph Hellwig | c859cdd | 2011-08-23 08:28:10 +0000 | [diff] [blame] | 48 | unsigned int io_isasync : 1; /* needs aio_complete */ |
Christoph Hellwig | 281627d | 2012-03-13 08:41:05 +0000 | [diff] [blame] | 49 | unsigned int io_isdirect : 1;/* direct I/O */ |
Christoph Hellwig | b677c21 | 2007-08-29 11:46:28 +1000 | [diff] [blame] | 50 | struct inode *io_inode; /* file being written to */ |
Christoph Hellwig | c1a073b | 2005-09-05 08:23:35 +1000 | [diff] [blame] | 51 | struct buffer_head *io_buffer_head;/* buffer linked list head */ |
Christoph Hellwig | f6d6d4f | 2006-01-11 15:40:13 +1100 | [diff] [blame] | 52 | struct buffer_head *io_buffer_tail;/* buffer linked list tail */ |
Christoph Hellwig | 65b3da3 | 2005-09-05 08:18:12 +1000 | [diff] [blame] | 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 */ |
Christoph Hellwig | 281627d | 2012-03-13 08:41:05 +0000 | [diff] [blame] | 56 | struct xfs_trans *io_append_trans;/* xact. for size update */ |
Christoph Hellwig | 40e2e97 | 2010-07-18 21:17:09 +0000 | [diff] [blame] | 57 | struct kiocb *io_iocb; |
| 58 | int io_result; |
Christoph Hellwig | 65b3da3 | 2005-09-05 08:18:12 +1000 | [diff] [blame] | 59 | } xfs_ioend_t; |
| 60 | |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 61 | extern const struct address_space_operations xfs_address_space_operations; |
Nathan Scott | c253666 | 2006-03-29 10:44:40 +1000 | [diff] [blame] | 62 | extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int); |
Christoph Hellwig | f6d6d4f | 2006-01-11 15:40:13 +1100 | [diff] [blame] | 63 | |
Christoph Hellwig | 20cb52e | 2010-06-24 09:46:01 +1000 | [diff] [blame] | 64 | extern void xfs_count_page_state(struct page *, int *, int *); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 65 | |
Nathan Scott | ad72387 | 2006-06-09 15:29:12 +1000 | [diff] [blame] | 66 | #endif /* __XFS_AOPS_H__ */ |