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Date: Thu, 3 Nov 2016 14:14:04 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Vitaly Wool <vitalywool@gmail.com>
Cc: Linux-MM <linux-mm@kvack.org>, linux-kernel@vger.kernel.org,
        Dan Streetman <ddstreet@ieee.org>
Subject: Re: [PATCH] z3fold: make pages_nr atomic
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On Thu, 3 Nov 2016 22:00:58 +0100 Vitaly Wool <vitalywool@gmail.com> wrote:

> This patch converts pages_nr per-pool counter to atomic64_t.

Which is slower.

Presumably there is a reason for making this change.  This reason
should be described in the changelog.