From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B2022C32789 for ; Wed, 7 Nov 2018 00:22:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7EEBD2086B for ; Wed, 7 Nov 2018 00:22:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7EEBD2086B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731114AbeKGJt7 (ORCPT ); Wed, 7 Nov 2018 04:49:59 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:50506 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730991AbeKGJt7 (ORCPT ); Wed, 7 Nov 2018 04:49:59 -0500 Received: from akpm3.svl.corp.google.com (unknown [104.133.8.65]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 53E0CA7F; Wed, 7 Nov 2018 00:22:07 +0000 (UTC) Date: Tue, 6 Nov 2018 16:22:06 -0800 From: Andrew Morton To: Arun KS Cc: keescook@chromium.org, khlebnikov@yandex-team.ru, minchan@kernel.org, getarunks@gmail.com, gregkh@linuxfoundation.org, mhocko@kernel.org, vbabka@suse.cz, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v1 0/4]mm: convert totalram_pages, totalhigh_pages and managed pages to atomic Message-Id: <20181106162206.0f43c1eb16c3dd812bdadbdd@linux-foundation.org> In-Reply-To: <1540551662-26458-1-git-send-email-arunks@codeaurora.org> References: <1540551662-26458-1-git-send-email-arunks@codeaurora.org> X-Mailer: Sylpheed 3.6.0 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 26 Oct 2018 16:30:58 +0530 Arun KS 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?