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 6CC6AC32789 for ; Tue, 6 Nov 2018 12:06:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3C76C2086A for ; Tue, 6 Nov 2018 12:06:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3C76C2086A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz 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 S2387742AbeKFVbX (ORCPT ); Tue, 6 Nov 2018 16:31:23 -0500 Received: from mx2.suse.de ([195.135.220.15]:41198 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2387515AbeKFVbW (ORCPT ); Tue, 6 Nov 2018 16:31:22 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id AC9E0B60F; Tue, 6 Nov 2018 12:06:26 +0000 (UTC) Subject: Re: [PATCH v3 2/2] mm/page_alloc: use a single function to free page To: Aaron Lu , linux-mm@kvack.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Cc: Andrew Morton , =?UTF-8?Q?Pawe=c5=82_Staszewski?= , Jesper Dangaard Brouer , Eric Dumazet , Tariq Toukan , Ilias Apalodimas , Yoel Caspersen , Mel Gorman , Saeed Mahameed , Michal Hocko , Dave Hansen , Alexander Duyck References: <20181105085820.6341-1-aaron.lu@intel.com> <20181105085820.6341-2-aaron.lu@intel.com> <20181106053037.GD6203@intel.com> <20181106113149.GC24198@intel.com> From: Vlastimil Babka Openpgp: preference=signencrypt Autocrypt: addr=vbabka@suse.cz; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <20181106113149.GC24198@intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/6/18 12:31 PM, Aaron Lu wrote: > We have multiple places of freeing a page, most of them doing similar > things and a common function can be used to reduce code duplicate. > > It also avoids bug fixed in one function but left in another. > > Signed-off-by: Aaron Lu Acked-by: Vlastimil Babka Thanks! > --- > v3: Vlastimil mentioned the possible performance loss by using > page_ref_sub_and_test(page, 1) for put_page_testzero(page), since > we aren't sure so be safe by keeping page ref decreasing code as > is, only move freeing page part to a common function.