2 * Copyright (c) 2005-2006 Silicon Graphics, Inc.
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
7 * published by the Free Software Foundation.
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.
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
18 #ifndef __XFS_AOPS_H__
19 #define __XFS_AOPS_H__
21 extern struct workqueue_struct *xfsdatad_workqueue;
22 extern mempool_t *xfs_ioend_pool;
25 * xfs_ioend struct manages large extent writes for XFS.
26 * It can manage several multi-page bio's at once.
28 typedef struct xfs_ioend {
29 struct xfs_ioend *io_list; /* next ioend in chain */
30 unsigned int io_type; /* delalloc / unwritten */
31 int io_error; /* I/O error code */
32 atomic_t io_remaining; /* hold count */
33 struct inode *io_inode; /* file being written to */
34 struct buffer_head *io_buffer_head;/* buffer linked list head */
35 struct buffer_head *io_buffer_tail;/* buffer linked list tail */
36 size_t io_size; /* size of the extent */
37 xfs_off_t io_offset; /* offset in the file */
38 struct work_struct io_work; /* xfsdatad work queue */
41 extern const struct address_space_operations xfs_address_space_operations;
42 extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int);
44 extern void xfs_ioend_init(void);
45 extern void xfs_ioend_wait(struct xfs_inode *);
47 #endif /* __XFS_AOPS_H__ */