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Date: Sun, 12 Apr 2015 00:25:05 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: ZhangNeil <neilzhang1123@hotmail.com>
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Subject: Re: [PATCH v2] mm: show free pages per each migrate type
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On Sun, 12 Apr 2015 07:17:11 +0000 ZhangNeil <neilzhang1123@hotmail.com> wrote:

> I calculate the__nr_free[][] again, it is an 6x11 array of 8 in the worst case, that is 528B, is it acceptable?

I don't think so.  This is hardly a critical change and that's a high cost.