From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-f197.google.com (mail-pf1-f197.google.com [209.85.210.197]) by kanga.kvack.org (Postfix) with ESMTP id 27BAC6B04AA for ; Tue, 6 Nov 2018 19:22:11 -0500 (EST) Received: by mail-pf1-f197.google.com with SMTP id a72-v6so13894432pfj.14 for ; Tue, 06 Nov 2018 16:22:11 -0800 (PST) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id i11-v6si33004816pgk.29.2018.11.06.16.22.09 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 06 Nov 2018 16:22:09 -0800 (PST) Date: Tue, 6 Nov 2018 16:22:06 -0800 From: Andrew Morton 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> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: 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 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?