On Wed, 21 Nov 2012 22:36:56 +0800
Jiang Liu <liu...@gmail.com> wrote:
> > 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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