D19999.id56460.diff
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D19999.id56460.diff
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	Index: sys/vm/vm_map.c
	===================================================================
	--- sys/vm/vm_map.c
	+++ sys/vm/vm_map.c
	@@ -670,6 +670,14 @@
	#define VM_MAP_ASSERT_LOCKED(map) \
	_vm_map_assert_locked(map, LOCK_FILE, LOCK_LINE)

	+#ifdef DIAGNOSTIC
	+static int enable_vmmap_check = 1;
	+#else
	+static int enable_vmmap_check = 0;
	+#endif
	+SYSCTL_INT(_debug, OID_AUTO, vmmap_check, CTLFLAG_RWTUN,
	+ &enable_vmmap_check, 0, "Enable vm map consistency checking");
	+
	static void
	_vm_map_assert_consistent(vm_map_t map)
	{
	@@ -677,6 +685,9 @@
	vm_map_entry_t child;
	vm_size_t max_left, max_right;

	+ if (!enable_vmmap_check)
	+ return;
	+
	for (entry = map->header.next; entry != &map->header;
	entry = entry->next) {
	KASSERT(entry->prev->end <= entry->start,
	@@ -714,7 +725,7 @@
	#else
	#define VM_MAP_ASSERT_LOCKED(map)
	#define VM_MAP_ASSERT_CONSISTENT(map)
	-#endif
	+#endif /* INVARIANTS */

	/*
	* _vm_map_unlock_and_wait: