/* dmap.h 4.3 81/04/23 */
/*
* Definitions for the mapping of vitual swap
* space to the physical swap area - the disk map.
*/
#define NDMAP 16 /* size of the swap area map */
#define DMMIN 32 /* the initial block size in clicks */
#define DMMAX 1024 /* max block size alloc on drum = .5M byte */
#define DMTEXT 1024 /* size of blocks of pure text = .5M byte */
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;
#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 */
};