usr/src/sys/h/vadvise.h

/*      vadvise.h       6.1     83/07/29        */

/*
 * Parameters to vadvise() to tell system of particular paging
 * behaviour:
 *      VA_NORM         Normal strategy
 *      VA_ANOM         Sampling page behaviour is not a win, don't bother
 *                      Suitable during GCs in LISP, or sequential or random
 *                      page referencing.
 *      VA_SEQL         Sequential behaviour expected.
 *      VA_FLUSH        Invalidate all page table entries.
 */
#define VA_NORM 0
#define VA_ANOM 1
#define VA_SEQL 2
#define VA_FLUSH 3