D47047.1794748715.diff
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	diff --git a/sys/vm/vm_object.h b/sys/vm/vm_object.h
	--- a/sys/vm/vm_object.h
	+++ b/sys/vm/vm_object.h
	@@ -363,6 +363,7 @@
	void vm_object_destroy (vm_object_t);
	void vm_object_terminate (vm_object_t);
	void vm_object_set_writeable_dirty (vm_object_t);
	+void vm_object_set_writeable_dirty_count (vm_object_t, int);
	void vm_object_set_writeable_dirty_(vm_object_t object);
	bool vm_object_mightbedirty(vm_object_t object);
	bool vm_object_mightbedirty_(vm_object_t object);
	diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c
	--- a/sys/vm/vm_object.c
	+++ b/sys/vm/vm_object.c
	@@ -2337,6 +2337,13 @@
	return (TRUE);
	}

	+void
	+vm_object_set_writeable_dirty_count(vm_object_t object, int count)
	+{
	+ MPASS(count > 0);
	+ atomic_add_int(&object->generation, count);
	+}
	+
	void
	vm_object_set_writeable_dirty_(vm_object_t object)
	{