Received: by 2002:ad5:474a:0:0:0:0:0 with SMTP id i10csp990397imu; Tue, 20 Nov 2018 09:53:20 -0800 (PST) X-Google-Smtp-Source: AFSGD/ULueg4OZipIOG+SipOIlQSww+O0XhOmt0eQ+IhTRATf4NF+UegjggXstKv3NSGeNElFN40 X-Received: by 2002:a17:902:28aa:: with SMTP id f39mr3215133plb.297.1542736400216; Tue, 20 Nov 2018 09:53:20 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1542736400; cv=none; d=google.com; s=arc-20160816; b=0cb8y43mL+wFtwqohLdvlaBGKxqfp8GEBHYI7hRkm4IHBg3zJh7ZD+rFoJk6CELBq5 knLreObH+xP/u3fBTef46Gg7C7c0ytI5/eA6DiQgy/SHMx5gNTkPExgx13P5FRft33gD NsCfbRX5ORnvWMNXzLYpneUMWmd/ZdIpCZzMkPHruFuVuDGjcbsv1gMpKIq0/AdKZdY9 yi8TfdZpCfj/jjKoUlzzzqF7K2CTTBUAon/29QmRWgLQVdhAL0hlO5PYJKaNMmy9Zmrv NIO3CJ4mpk72N6178VIRJvjAfJdtVKXTE4dKFXrPnC6kjXjrcPCQ0xPvJYJX6/N7O8b/ Xy6g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:date:cc:to:from:subject:message-id; bh=WTb/7snpV/k4M/GsJ1R16usxPmm1wbQqJRS54xRjyd8=; b=Ubt5YCKwqS1nG22X67bG1fQHrk3ei1W6RGZupwDYC+RqgguscdESlRpVpgQwj70aAe kOb1Z1zSb9R0A0eSb7RAjfIRV1rVgspX8sUwX8fP6hflQ3aDLcjLc0Q+gAzbRHnXhyz0 xwfh7HncwYLBpW4M+7YYPwaEl0idfQq19ytWk/c8Nr3VHL7p+1CqoO6SbIQJ+LbnKh1Q kbCP02B1PI2LEVDX1qpl0jGV8TK0Sb8nR2eHt4bg9ArSq+oghCs6+sQd4eVlKPFjz92W xWXeWTCxil2aic3M380zsZTSoFkfKxGi+OqCRpkFukB7HVbrmcvfCll+0+wHoywDKERL dZbg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d14si43922207pgn.390.2018.11.20.09.52.54; Tue, 20 Nov 2018 09:53:20 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728257AbeKUBVi (ORCPT + 99 others); Tue, 20 Nov 2018 20:21:38 -0500 Received: from smtp.nue.novell.com ([195.135.221.5]:41278 "EHLO smtp.nue.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726557AbeKUBVi (ORCPT ); Tue, 20 Nov 2018 20:21:38 -0500 Received: from emea4-mta.ukb.novell.com ([10.120.13.87]) by smtp.nue.novell.com with ESMTP (TLS encrypted); Tue, 20 Nov 2018 15:52:05 +0100 Received: from [149.44.172.157] (nwb-a10-snat.microfocus.com [10.120.13.201]) by emea4-mta.ukb.novell.com with ESMTP (TLS encrypted); Tue, 20 Nov 2018 14:51:49 +0000 Message-ID: <1542725492.6817.3.camel@suse.com> Subject: Re: [RFC PATCH 1/3] mm, memory_hotplug: try to migrate full section worth of pages From: osalvador To: Michal Hocko , linux-mm@kvack.org Cc: Andrew Morton , Pavel Tatashin , David Hildenbrand , LKML , Michal Hocko Date: Tue, 20 Nov 2018 15:51:32 +0100 In-Reply-To: <20181120134323.13007-2-mhocko@kernel.org> References: <20181120134323.13007-1-mhocko@kernel.org> <20181120134323.13007-2-mhocko@kernel.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2018-11-20 at 14:43 +0100, Michal Hocko wrote: > From: Michal Hocko > > do_migrate_range has been limiting the number of pages to migrate to > 256 > for some reason which is not documented. When looking back at old memory-hotplug commits one feels pretty sad about the brevity of the changelogs. > Signed-off-by: Michal Hocko Reviewed-by: Oscar Salvador