usr/src/sys/sys/dmap.h

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *      @(#)dmap.h      7.1 (Berkeley) 6/4/86
 */

/*
 * Definitions for the mapping of vitual swap
 * space to the physical swap area - the disk map.
 */

#define NDMAP           38      /* size of the swap area map */

struct  dmap
{
        swblk_t dm_size;        /* current size used by process */
        swblk_t dm_alloc;       /* amount of physical swap space allocated */
        swblk_t dm_map[NDMAP];  /* first disk block number in each chunk */
};
#ifdef KERNEL
struct  dmap zdmap;
int     dmmin, dmmax, dmtext;
#endif

/*
 * The following structure is that ``returned''
 * from a call to vstodb().
 */
struct  dblock
{
        swblk_t db_base;        /* base of physical contig drum block */
        swblk_t db_size;        /* size of block */
};