1 /*- 2 * Copyright (c) 1982, 1986, 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 * @(#)dmap.h 8.2 (Berkeley) 1/4/94 30 * $FreeBSD: src/sys/sys/dmap.h,v 1.7 1999/12/29 04:24:40 peter Exp $ 31 */ 32 33 #ifndef _SYS_DMAP_H_ 34 #define _SYS_DMAP_H_ 35 36 #ifndef _SYS_TYPES_H_ 37 #include <sys/types.h> 38 #endif 39 #ifndef _SYS_BLIST_H_ 40 #include <sys/blist.h> 41 #endif 42 43 /* 44 * Definitions for the mapping of vitual swap space to the physical swap 45 * area - the disk map. 46 */ 47 #define NDMAP 38 /* size of the swap area map */ 48 49 struct dmap { 50 swblk_t dm_size; /* current size used by process */ 51 swblk_t dm_alloc; /* amount of physical swap space allocated */ 52 swblk_t dm_map[NDMAP]; /* first disk block number in each chunk */ 53 }; 54 55 /* The following structure is that ``returned'' from a call to vstodb(). */ 56 struct dblock { 57 swblk_t db_base; /* base of physical contig drum block */ 58 swblk_t db_size; /* size of block */ 59 }; 60 #endif /* !_SYS_DMAP_H_ */ 61