D36839.diff
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D36839.diff
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	diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
	--- a/sys/vm/vm_page.c
	+++ b/sys/vm/vm_page.c
	@@ -4141,7 +4141,12 @@
	if (nqueue == PQ_ACTIVE)
	new.act_count = max(old.act_count, ACT_INIT);
	if (old.queue == nqueue) {
	- if (nqueue != PQ_ACTIVE)
	+ /*
	+ * There is no need to requeue pages already in the
	+ * active queue.
	+ */
	+ if (nqueue != PQ_ACTIVE \|\|
	+ (old.flags & PGA_ENQUEUED) == 0)
	new.flags \|= nflag;
	} else {
	new.flags \|= nflag;
	@@ -4238,7 +4243,8 @@
	* referenced and avoid any queue operations.
	*/
	new.flags &= ~PGA_QUEUE_OP_MASK;
	- if (nflag != PGA_REQUEUE_HEAD && old.queue == PQ_ACTIVE)
	+ if (nflag != PGA_REQUEUE_HEAD && old.queue == PQ_ACTIVE &&
	+ (old.flags & PGA_ENQUEUED) != 0)
	new.flags \|= PGA_REFERENCED;
	else {
	new.flags \|= nflag;