Re: [PATCH] mm/vmstat: retrieve more accurate vmstat value

[Christoph Lameter]

On Wed, 25 Nov 2015, Michal Hocko wrote:

> > Simply remove the counter from the vmstat handling and do it differently
> > then.
>
> We definitely do not want yet another set of counters. vmstat counters
> are not only to be exported into the userspace. We have in kernel users
> as well. I do agree that there are users who can cope with some level of
> imprecision though and those which depend on the accuracy can use
> zone_page_state_snapshot which doesn't impose any overhead on others.
> [...]

Ok then the proper patch would be to use zone_page_state() instead of
zone_page_state() here instead of modifying zone_page_state().

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