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. 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 * @(#)dmap.h 8.2 (Berkeley) 1/4/94 34 * $FreeBSD: src/sys/sys/dmap.h,v 1.7 1999/12/29 04:24:40 peter Exp $ 35 */ 36 37 #ifndef _SYS_DMAP_H_ 38 #define _SYS_DMAP_H_ 39 40 #ifndef _SYS_TYPES_H_ 41 #include <sys/types.h> 42 #endif 43 #ifndef _SYS_BLIST_H_ 44 #include <sys/blist.h> 45 #endif 46 47 /* 48 * Definitions for the mapping of vitual swap space to the physical swap 49 * area - the disk map. 50 */ 51 #define NDMAP 38 /* size of the swap area map */ 52 53 struct dmap { 54 swblk_t dm_size; /* current size used by process */ 55 swblk_t dm_alloc; /* amount of physical swap space allocated */ 56 swblk_t dm_map[NDMAP]; /* first disk block number in each chunk */ 57 }; 58 #ifdef _KERNEL 59 extern int dmmax; 60 #endif 61 62 /* The following structure is that ``returned'' from a call to vstodb(). */ 63 struct dblock { 64 swblk_t db_base; /* base of physical contig drum block */ 65 swblk_t db_size; /* size of block */ 66 }; 67 #endif /* !_SYS_DMAP_H_ */ 68