Re: [PATCH v2] mm: show free pages per each migrate type

[Andrew Morton]

On Fri, 10 Apr 2015 04:16:15 +0000 ZhangNeil <neilzhang1123@xxxxxxxxxxx> wrote:

> > I think we can eliminate nr_free[][]:
> 
> what about make it as global__variable?

That isn't as good - it permanently consumes memory and really requires
new locking to protect the array from concurrent callers.

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