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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 F14EAC433DB for ; Tue, 2 Mar 2021 03:52:56 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 222E164DE4 for ; Tue, 2 Mar 2021 03:52:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 222E164DE4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id AC5E68D00D5; Mon, 1 Mar 2021 22:52:55 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id A52368D0063; Mon, 1 Mar 2021 22:52:55 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 82F2C8D00D5; Mon, 1 Mar 2021 22:52:55 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0117.hostedemail.com [216.40.44.117]) by kanga.kvack.org (Postfix) with ESMTP id 5DF1D8D0063 for ; Mon, 1 Mar 2021 22:52:55 -0500 (EST) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 283AA68AB for ; Tue, 2 Mar 2021 03:52:55 +0000 (UTC) X-FDA: 77873563110.16.C738C1A Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf23.hostedemail.com (Postfix) with ESMTP id EAD95A0000FD for ; Tue, 2 Mar 2021 03:52:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=rnlSDW3mF7NO8UIJXpqSiCxH4+2NNXRWombkw0Aj2Rs=; b=vG9x3+LxcXFEsJc2YB8k1xX3gC c2Z3TxmrzmudqJ1H0oVCSPPSMebYI8IBCskQNpqmtDCBSo+VBYc2m+U5RJ1Hj9gs0b2P19sgMtJrt qQ1ySu/SIDQOxwC1nQXI0VY94p55chxnuKIr2HX7I5+UAtyeRWTmRe8GgeIgO5zBQYiPnz3kIV6Ds 0jZIot9SuQAfqpnCuVBN2tP65qhHbasyNtQm5hjO+szqRaVUGEM96OlXg6y7Xbcxzf0VU31CEEbJk cuQHuyM1LdBH2jlgtglSOheA4mNgBT4l4rZ9KV/hvQt5ghNnBQnVJ75GY6/b9mtnMdqXv8i+7H7Y4 GHezC5Uw==; Received: from willy by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1lGw5D-00GZfm-V4; Tue, 02 Mar 2021 03:52:33 +0000 Date: Tue, 2 Mar 2021 03:52:27 +0000 From: Matthew Wilcox To: Yejune Deng Cc: cl@linux.com, penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, akpm@linux-foundation.org, vbabka@suse.cz, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] include/linux/slab.h: use for() and left shift to calculate Message-ID: <20210302035227.GW2723601@casper.infradead.org> References: <20210302033908.51706-1-yejune.deng@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210302033908.51706-1-yejune.deng@gmail.com> X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: EAD95A0000FD X-Stat-Signature: 9bpibxkn1zzqj4fof78wjfbtyticu1o1 Received-SPF: none (infradead.org>: No applicable sender policy available) receiver=imf23; identity=mailfrom; envelope-from=""; helo=casper.infradead.org; client-ip=90.155.50.34 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1614657173-843769 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, Mar 02, 2021 at 11:39:08AM +0800, Yejune Deng wrote: > use for() and left shift to calculate the value that compared with size. https://lore.kernel.org/linux-mm/339dbb54-b4bc-78e2-e3f0-986814e86d0e@suse.cz/