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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)mfsnode.h 8.3 (Berkeley) 5/19/95 30 * $FreeBSD: src/sys/ufs/mfs/mfsnode.h,v 1.12.2.2 2001/07/04 17:35:21 tegge Exp $ 31 * $DragonFly: src/sys/vfs/mfs/mfsnode.h,v 1.6 2006/09/10 01:26:41 dillon Exp $ 32 */ 33 34 #ifndef _UFS_MFS_MFSNODE_H_ 35 #define _UFS_MFS_MFSNODE_H_ 36 37 /* 38 * This structure defines the control data for the memory based file system. 39 */ 40 41 struct mfsnode { 42 caddr_t mfs_baseoff; /* base of file system in memory */ 43 long mfs_size; /* size of memory file system */ 44 struct thread *mfs_td; /* supporting thread */ 45 struct bio_queue_head bio_queue; /* list of I/O requests */ 46 cdev_t mfs_dev; /* underlying device */ 47 int mfs_active; 48 long mfs_spare[1]; 49 }; 50 51 #ifdef MALLOC_DECLARE 52 MALLOC_DECLARE(M_MFSNODE); 53 #endif 54 55 #endif 56