xfs_aops.h

来自「底层驱动开发」· C头文件 代码 · 共 51 行

/*
 * 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 */
	struct buffer_head	*io_buffer_head;/* buffer linked list head */
	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__ */