1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)mfsnode.h 8.3 (Berkeley) 5/19/95 34 * $FreeBSD: src/sys/ufs/mfs/mfsnode.h,v 1.12.2.2 2001/07/04 17:35:21 tegge Exp $ 35 * $DragonFly: src/sys/vfs/mfs/mfsnode.h,v 1.6 2006/09/10 01:26:41 dillon Exp $ 36 */ 37 38 #ifndef _UFS_MFS_MFSNODE_H_ 39 #define _UFS_MFS_MFSNODE_H_ 40 41 /* 42 * This structure defines the control data for the memory based file system. 43 */ 44 45 struct mfsnode { 46 caddr_t mfs_baseoff; /* base of file system in memory */ 47 long mfs_size; /* size of memory file system */ 48 struct thread *mfs_td; /* supporting thread */ 49 struct bio_queue_head bio_queue; /* list of I/O requests */ 50 cdev_t mfs_dev; /* underlying device */ 51 int mfs_active; 52 long mfs_spare[1]; 53 }; 54 55 #ifdef MALLOC_DECLARE 56 MALLOC_DECLARE(M_MFSNODE); 57 #endif 58 59 #endif 60