From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755795AbbAPR5v (ORCPT ); Fri, 16 Jan 2015 12:57:51 -0500 Received: from mail-we0-f171.google.com ([74.125.82.171]:39241 "EHLO mail-we0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751730AbbAPR5u (ORCPT ); Fri, 16 Jan 2015 12:57:50 -0500 Date: Fri, 16 Jan 2015 18:57:45 +0100 From: Michal Hocko To: Vinayak Menon Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, hannes@cmpxchg.org, vdavydov@parallels.com, mgorman@suse.de, minchan@kernel.org, Christoph Lameter Subject: Re: [PATCH v2] mm: vmscan: fix the page state calculation in too_many_isolated Message-ID: <20150116175745.GA22136@dhcp22.suse.cz> References: <1421235419-30736-1-git-send-email-vinmenon@codeaurora.org> <20150114165036.GI4706@dhcp22.suse.cz> <54B7F7C4.2070105@codeaurora.org> <20150116154922.GB4650@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150116154922.GB4650@dhcp22.suse.cz> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri 16-01-15 16:49:22, Michal Hocko wrote: [...] > Why cannot we simply update the global counters from vmstat_shepherd > directly? OK, I should have checked the updating paths... This would be racy, so update from remote is not an option without additional trickery (like retries etc.) :/ -- Michal Hocko SUSE Labs