1/* 2 * Copyright (c) 2005-2006 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 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. 8 * 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. 13 * 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 17 */ 18#ifndef __XFS_AOPS_H__ 19#define __XFS_AOPS_H__ 20 21extern struct workqueue_struct *xfsdatad_workqueue; 22extern struct workqueue_struct *xfsconvertd_workqueue; 23extern mempool_t *xfs_ioend_pool; 24 25/* 26 * xfs_ioend struct manages large extent writes for XFS. 27 * It can manage several multi-page bio's at once. 28 */ 29typedef struct xfs_ioend { 30 struct xfs_ioend *io_list; /* next ioend in chain */ 31 unsigned int io_type; /* delalloc / unwritten */ 32 int io_error; /* I/O error code */ 33 atomic_t io_remaining; /* hold count */ 34 struct inode *io_inode; /* file being written to */ 35 struct buffer_head *io_buffer_head;/* buffer linked list head */ 36 struct buffer_head *io_buffer_tail;/* buffer linked list tail */ 37 size_t io_size; /* size of the extent */ 38 xfs_off_t io_offset; /* offset in the file */ 39 struct work_struct io_work; /* xfsdatad work queue */ 40 struct kiocb *io_iocb; 41 int io_result; 42} xfs_ioend_t; 43 44extern const struct address_space_operations xfs_address_space_operations; 45extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int); 46 47extern void xfs_ioend_init(void); 48extern void xfs_ioend_wait(struct xfs_inode *); 49 50extern void xfs_count_page_state(struct page *, int *, int *); 51 52#endif /* __XFS_AOPS_H__ */ 53