linux-kernel - Re: [PATCH] z3fold: make pages

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Message-Id: <20161103141404.2bb6b59435e560f0b82c0a18@linux-foundation.org>
Date:   Thu, 3 Nov 2016 14:14:04 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Vitaly Wool <vitalywool@...il.com>
Cc:     Linux-MM <linux-mm@...ck.org>, linux-kernel@...r.kernel.org,
        Dan Streetman <ddstreet@...e.org>
Subject: Re: [PATCH] z3fold: make pages_nr atomic

On Thu, 3 Nov 2016 22:00:58 +0100 Vitaly Wool <vitalywool@...il.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.