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=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 AAEE0C32789 for ; Tue, 6 Nov 2018 23:36:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6B0B12086A for ; Tue, 6 Nov 2018 23:36:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B0B12086A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ah.jp.nec.com 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 S1731044AbeKGJDn convert rfc822-to-8bit (ORCPT ); Wed, 7 Nov 2018 04:03:43 -0500 Received: from tyo161.gate.nec.co.jp ([114.179.232.161]:50011 "EHLO tyo161.gate.nec.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730409AbeKGJDm (ORCPT ); Wed, 7 Nov 2018 04:03:42 -0500 Received: from mailgate01.nec.co.jp ([114.179.233.122]) by tyo161.gate.nec.co.jp (8.15.1/8.15.1) with ESMTPS id wA6NZpU0008541 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 7 Nov 2018 08:35:51 +0900 Received: from mailsv02.nec.co.jp (mailgate-v.nec.co.jp [10.204.236.94]) by mailgate01.nec.co.jp (8.15.1/8.15.1) with ESMTP id wA6NZp5p018111; Wed, 7 Nov 2018 08:35:51 +0900 Received: from mail01b.kamome.nec.co.jp (mail01b.kamome.nec.co.jp [10.25.43.2]) by mailsv02.nec.co.jp (8.15.1/8.15.1) with ESMTP id wA6NZYHh016145; Wed, 7 Nov 2018 08:35:51 +0900 Received: from bpxc99gp.gisp.nec.co.jp ([10.38.151.150] [10.38.151.150]) by mail03.kamome.nec.co.jp with ESMTP id BT-MMP-5307525; Wed, 7 Nov 2018 08:32:09 +0900 Received: from BPXM23GP.gisp.nec.co.jp ([10.38.151.215]) by BPXC22GP.gisp.nec.co.jp ([10.38.151.150]) with mapi id 14.03.0319.002; Wed, 7 Nov 2018 08:32:08 +0900 From: Naoya Horiguchi To: Balbir Singh CC: "akpm@linux-foundation.org" , "mhocko@suse.com" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] mm/hotplug: Optimize clear_hwpoisoned_pages Thread-Topic: [PATCH] mm/hotplug: Optimize clear_hwpoisoned_pages Thread-Index: AQHUdijujEsMTOdnTk2OJ4lTNggnAg== Date: Tue, 6 Nov 2018 23:32:08 +0000 Message-ID: <20181106233207.GA10086@hori1.linux.bs1.fc.nec.co.jp> References: <20181102120001.4526-1-bsingharora@gmail.com> In-Reply-To: <20181102120001.4526-1-bsingharora@gmail.com> Accept-Language: en-US, ja-JP Content-Language: ja-JP X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.51.8.82] Content-Type: text/plain; charset="iso-2022-jp" Content-ID: <915B1044C3DC1F46A94DA8D832A6F625@gisp.nec.co.jp> Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 X-TM-AS-MML: disable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 02, 2018 at 11:00:01PM +1100, Balbir Singh wrote: > In hot remove, we try to clear poisoned pages, but > a small optimization to check if num_poisoned_pages > is 0 helps remove the iteration through nr_pages. > > Signed-off-by: Balbir Singh Acked-by: Naoya Horiguchi Thanks!