Source to sys/vadvise.h
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* @(#)vadvise.h 7.2 (Berkeley) 5/5/91
* Parameters to vadvise() to tell system of particular paging
* 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