linux-kernel - Re: [PATCH v1 0/4]mm: convert totalram_pages, totalhigh

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Date:   Tue, 6 Nov 2018 16:22:06 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Arun KS <arunks@...eaurora.org>
Cc:     keescook@...omium.org, khlebnikov@...dex-team.ru,
        minchan@...nel.org, getarunks@...il.com,
        gregkh@...uxfoundation.org, mhocko@...nel.org, vbabka@...e.cz,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v1 0/4]mm: convert totalram_pages, totalhigh_pages and
 managed pages to atomic

On Fri, 26 Oct 2018 16:30:58 +0530 Arun KS <arunks@...eaurora.org> wrote:

> This series convert totalram_pages, totalhigh_pages and
> zone->managed_pages to atomic variables.

The whole point appears to be removal of managed_page_count_lock, yes?

Why?  What is the value of this patchset?  If "performance" then are any
measurements available?