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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 80AA2C56201 for ; Wed, 25 Nov 2020 23:43:50 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C9A6020872 for ; Wed, 25 Nov 2020 23:43:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="AiPLLhwp" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C9A6020872 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 5C8B46B0070; Wed, 25 Nov 2020 18:43:49 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 553776B0071; Wed, 25 Nov 2020 18:43:49 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 442EB6B0072; Wed, 25 Nov 2020 18:43:49 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0242.hostedemail.com [216.40.44.242]) by kanga.kvack.org (Postfix) with ESMTP id 2FB906B0070 for ; Wed, 25 Nov 2020 18:43:49 -0500 (EST) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id E3DD58249980 for ; Wed, 25 Nov 2020 23:43:48 +0000 (UTC) X-FDA: 77524570536.01.ducks04_3409dd02737a Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id BF1A5100480AA for ; Wed, 25 Nov 2020 23:43:48 +0000 (UTC) X-HE-Tag: ducks04_3409dd02737a X-Filterd-Recvd-Size: 2930 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf01.hostedemail.com (Postfix) with ESMTP for ; Wed, 25 Nov 2020 23:43:48 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B44022083E; Wed, 25 Nov 2020 23:43:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1606347827; bh=kOFErl5XJMINI4SwJaOp8h3tEhoYiaCWvoyO10MzEpI=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=AiPLLhwpmyxZVxCNgJMBV3tPUxIEObX7uSwkhvWnlE/p8XwtwhEEK8aLAFCyDURKr B1qvYuP4e/mwn/e6w4dy+kMJwgbR9fYvRj1fI027lJUYszZXhgKl0F1UXsC5C5ODgI 0Ieg5+mPw+XRGr7VETEUiNJqkyd5AxYczzL8SfXg= Date: Wed, 25 Nov 2020 15:43:46 -0800 From: Andrew Morton To: Vlastimil Babka Cc: Alex Shi , Matthew Wilcox , Hugh Dickins , Yu Zhao , Michal Hocko , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH next] mm/vmscan: __isolate_lru_page_prepare clean up Message-Id: <20201125154346.b2032c39cf3905bbebec3322@linux-foundation.org> In-Reply-To: <46ad053f-1401-31e8-50cf-09acda588f6f@suse.cz> References: <1605859413-53864-1-git-send-email-alex.shi@linux.alibaba.com> <20201120151307.4d9e3ef092ba01a325db7ce2@linux-foundation.org> <20201122123552.GF4327@casper.infradead.org> <728874d7-2d93-4049-68c1-dcc3b2d52ccd@linux.alibaba.com> <46ad053f-1401-31e8-50cf-09acda588f6f@suse.cz> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, 24 Nov 2020 12:21:28 +0100 Vlastimil Babka wrote: > On 11/22/20 3:00 PM, Alex Shi wrote: > > Thanks a lot for all comments, I picked all up and here is the v3: > > > > From 167131dd106a96fd08af725df850e0da6ec899af Mon Sep 17 00:00:00 2001 > > From: Alex Shi > > Date: Fri, 20 Nov 2020 14:49:16 +0800 > > Subject: [PATCH v3 next] mm/vmscan: __isolate_lru_page_prepare clean up > > > > The function just return 2 results, so use a 'switch' to deal with its > > result is unnecessary, and simplify it to a bool func as Vlastimil > > suggested. > > > > Also remove 'goto' by reusing list_move(), and take Matthew Wilcox's > > suggestion to update comments in function. > > I wouldn't mind if the goto stayed, but it's not repeating that much > without it (list_move() + continue, 3 times) so... I tried that, and .text became significantly larger, for reasons which I didn't investigate ;)