D50012.id154327.diff
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D50012.id154327.diff
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	Index: sys/vm/vm_fault.c
	===================================================================
	--- sys/vm/vm_fault.c
	+++ sys/vm/vm_fault.c
	@@ -1853,11 +1853,11 @@
	static void
	vm_fault_dontneed(const struct faultstate *fs, vm_offset_t vaddr, int ahead)
	{
	+ struct pctrie_iter pages;
	vm_map_entry_t entry;
	vm_object_t first_object;
	vm_offset_t end, start;
	- vm_page_t m, m_next;
	- vm_pindex_t pend, pstart;
	+ vm_page_t m;
	vm_size_t size;

	VM_OBJECT_ASSERT_UNLOCKED(fs->object);
	@@ -1876,13 +1876,12 @@
	else
	start = end - size;
	pmap_advise(fs->map->pmap, start, end, MADV_DONTNEED);
	- pstart = OFF_TO_IDX(entry->offset) + atop(start -
	- entry->start);
	- m_next = vm_page_find_least(first_object, pstart);
	- pend = OFF_TO_IDX(entry->offset) + atop(end -
	- entry->start);
	- while ((m = m_next) != NULL && m->pindex < pend) {
	- m_next = TAILQ_NEXT(m, listq);
	+ vm_page_iter_limit_init(&pages, first_object,
	+ OFF_TO_IDX(entry->offset) +
	+ atop(end - entry->start));
	+ VM_RADIX_FOREACH_FROM(m, &pages,
	+ OFF_TO_IDX(entry->offset) +
	+ atop(start - entry->start)) {
	if (!vm_page_all_valid(m) \|\|
	vm_page_busied(m))
	continue;