VM_ALLOC_COUNT_SHIFT
max((u_int)req >> VM_ALLOC_COUNT_SHIFT, 1));
after = MIN(after, allocflags >> VM_ALLOC_COUNT_SHIFT);
KASSERT(((u_int)allocflags >> VM_ALLOC_COUNT_SHIFT) == 0,
(count) << VM_ALLOC_COUNT_SHIFT; \