Function vm_page_unswappable

freebsd/vm/vm_page.c:4132–4141

* Put a page in the PQ_UNSWAPPABLE holding queue. */

 * Put a page in the PQ_UNSWAPPABLE holding queue.
 */
void
vm_page_unswappable(vm_page_t m)
{

	KASSERT(!vm_page_wired(m) && (m->oflags & VPO_UNMANAGED) == 0,
	    ("page %p already unswappable", m));

	vm_page_dequeue(m);
	vm_page_enqueue(m, PQ_UNSWAPPABLE);
}

/*
 * Release a page back to the page queues in preparation for unwiring.