On Wed, 21 Nov 2012 22:36:56 +0800
Jiang Liu [off-list ref] wrote:

quoted

void mod_zone_managed_pages(struct zone *zone, signed long delta)
{
	WARN_ON(system_state != SYSTEM_BOOTING &&
		!is_locked_memory_hotplug());
	zone->managed_pages += delta;
}

This seems a little overhead because __free_pages_bootmem() is on the hot path
and will be called many times at boot time.

Maybe, maybe not.  These things are measurable so let's not just guess.

But I'm not really recommending that we do this - there are all sorts
of things we *could* check and warn about, but we don't.  Potential
errors in this area don't seem terribly important.


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