/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)mfsnode.h	7.1 (Berkeley) 10/24/89
 */

/*
 * This structure defines the control data for the memory
 * based file system.
 */

struct mfsnode {
	struct	vnode *mfs_vnode;	/* vnode associated with this mfsnode */
	caddr_t	mfs_baseoff;		/* base of file system in memory */
	long	mfs_size;		/* size of memory file system */
	pid_t	mfs_pid;		/* supporting process pid */
	struct	buf *mfs_buflist;	/* list of I/O requests */
	long	mfs_spare[4];
};

/*
 * Convert between mfsnode pointers and vnode pointers
 */
#define VTOMFS(vp)	((struct mfsnode *)(vp)->v_data)
#define MFSTOV(mfsp)	((mfsp)->mfs_vnode)