D49987.diff
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	diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c
	--- a/sys/vm/vm_map.c
	+++ b/sys/vm/vm_map.c
	@@ -2678,7 +2678,7 @@
	struct pctrie_iter pages;
	vm_offset_t start;
	vm_page_t p, p_start;
	- vm_pindex_t mask, psize, threshold, tmpidx;
	+ vm_pindex_t jump, mask, psize, threshold, tmpidx;
	int psind;

	if ((prot & (VM_PROT_READ \| VM_PROT_EXECUTE)) == 0 \|\| object == NULL)
	@@ -2710,7 +2710,7 @@

	vm_page_iter_limit_init(&pages, object, pindex + psize);
	for (p = vm_radix_iter_lookup_ge(&pages, pindex); p != NULL;
	- p = vm_radix_iter_jump(&pages, mask + 1)) {
	+ p = vm_radix_iter_jump(&pages, jump)) {
	/*
	* don't allow an madvise to blow away our really
	* free pages allocating pv entries.
	@@ -2723,7 +2723,7 @@
	psize = tmpidx;
	break;
	}
	- mask = 0;
	+ jump = 1;
	if (vm_page_all_valid(p)) {
	if (p_start == NULL) {
	start = addr + ptoa(tmpidx);
	@@ -2737,6 +2737,7 @@
	if (tmpidx + mask < psize &&
	vm_page_ps_test(p, psind,
	PS_ALL_VALID, NULL)) {
	+ jump += mask;
	threshold += mask;
	break;
	}