root/fs/xfs/linux-2.6/xfs_aops.h

INCLUDED FROM

/*
 * Copyright (c) 2005-2006 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_AOPS_H__
#define __XFS_AOPS_H__

extern struct workqueue_struct *xfsdatad_workqueue;
extern mempool_t *xfs_ioend_pool;

typedef void (*xfs_ioend_func_t)(void *);

/*
 * xfs_ioend struct manages large extent writes for XFS.
 * It can manage several multi-page bio's at once.
 */
typedef struct xfs_ioend {
        struct xfs_ioend        *io_list;       /* next ioend in chain */
        unsigned int            io_type;        /* delalloc / unwritten */
        int                     io_error;       /* I/O error code */
        atomic_t                io_remaining;   /* hold count */
        struct inode            *io_inode;      /* file being written to */
        struct buffer_head      *io_buffer_head;/* buffer linked list head */
        struct buffer_head      *io_buffer_tail;/* buffer linked list tail */
        size_t                  io_size;        /* size of the extent */
        xfs_off_t               io_offset;      /* offset in the file */
        struct work_struct      io_work;        /* xfsdatad work queue */
} xfs_ioend_t;

extern const struct address_space_operations xfs_address_space_operations;
extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int);

#endif /* __XFS_AOPS_H__ */