[XFS] Add in the new xfs_aops.h header file for I/O completion struct.

/*

 * Copyright (c) 2005 Silicon Graphics, Inc.  All Rights Reserved.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of version 2 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.

 *

 * Further, this software is distributed without any warranty that it is

 * free of the rightful claim of any third person regarding infringement

 * or the like.  Any license provided herein, whether implied or

 * otherwise, applies only to this software file.  Patent licenses, if

 * any, provided herein do not apply to combinations of this program with

 * other software, or any other product whatsoever.

 *

 * You should have received a copy of the GNU General Public License along

 * with this program; if not, write the Free Software Foundation, Inc., 59

 * Temple Place - Suite 330, Boston MA 02111-1307, USA.

 *

 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,

 * Mountain View, CA  94043, or:

 *

 * http://www.sgi.com

 *

 * For further information regarding this notice, see:

 *

 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/

 */

#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 *);

typedef struct xfs_ioend {

	unsigned int		io_uptodate;	/* I/O status register */

	atomic_t		io_remaining;	/* hold count */

	struct vnode		*io_vnode;	/* file being written to */

	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;

#endif /* __XFS_IOPS_H__ */