D26173.1783349720.diff
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D26173.1783349720.diff
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	Index: head/sys/vm/vm_page.c
	===================================================================
	--- head/sys/vm/vm_page.c
	+++ head/sys/vm/vm_page.c
	@@ -3854,18 +3854,19 @@
	}

	/*
	- * Mark this page as wired down, preventing reclamation by the page daemon
	- * or when the containing object is destroyed.
	+ * Mark this page as wired down. For managed pages, this prevents reclamation
	+ * by the page daemon, or when the containing object, if any, is destroyed.
	*/
	void
	vm_page_wire(vm_page_t m)
	{
	u_int old;

	- KASSERT(m->object != NULL,
	- ("vm_page_wire: page %p does not belong to an object", m));
	- if (!vm_page_busied(m) && !vm_object_busied(m->object))
	+#ifdef INVARIANTS
	+ if (m->object != NULL && !vm_page_busied(m) &&
	+ !vm_object_busied(m->object))
	VM_OBJECT_ASSERT_LOCKED(m->object);
	+#endif
	KASSERT((m->flags & PG_FICTITIOUS) == 0 \|\|
	VPRC_WIRE_COUNT(m->ref_count) >= 1,
	("vm_page_wire: fictitious page %p has zero wirings", m));