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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id p2-20020a17090a680200b001bee2f94dadsi391477pjj.134.2022.03.21.14.51.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Mar 2022 14:51:08 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=gGjMpvSX; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 15C16EF799; Mon, 21 Mar 2022 14:19:04 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352853AbiCUT4V (ORCPT + 99 others); Mon, 21 Mar 2022 15:56:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50166 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345508AbiCUT4U (ORCPT ); Mon, 21 Mar 2022 15:56:20 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63C3217DCAA; Mon, 21 Mar 2022 12:54:53 -0700 (PDT) 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=4efTTqCS4Gsyb7wXaU8yL8zAGuclTlr6Cip6vqeSx5U=; b=gGjMpvSX+0ScawY3AAK5s8QnbO XilmRzJ+bqBsjUujrCWbfeV/tiRX+pQZDKbIS1SYRtDXXz1K9KLWQrCrfPxGmLQfFztXcAsXJ2Ddo l4tFcS3eTzqbtxZbVV5mTyle4MnmSMieKmIpHog/hTDlWj7SWmzHTxHQWMzK7iDKSGEKFuCuCF/9W coeGAeogiJmc3cJpJwW11rZXRiUcEkhs/lgHGb9qR0vtxf8I6ssv8JvulnzZxoy9KoA+SjsZE3S7Q 24osUQanD2wp6GrgKEPW9Zicp2W4mjDyhuUcBHe/T+iGNKsM6u29kq3/ct+LGca1//oM3Lch994Ro fcXZH5cw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nWO6v-00AtdF-9P; Mon, 21 Mar 2022 19:54:37 +0000 Date: Mon, 21 Mar 2022 19:54:37 +0000 From: Matthew Wilcox To: Zi Yan Cc: Roman Gushchin , linux-mm@kvack.org, Shuah Khan , Yang Shi , Miaohe Lin , Hugh Dickins , "Kirill A . Shutemov" , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: [RFC PATCH 1/5] mm: memcg: make memcg huge page split support any order split. Message-ID: References: <20220321142128.2471199-1-zi.yan@sent.com> <20220321142128.2471199-2-zi.yan@sent.com> <0001CABA-9436-4EFF-9C7F-F67300D09DA1@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0001CABA-9436-4EFF-9C7F-F67300D09DA1@nvidia.com> X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 21, 2022 at 03:07:46PM -0400, Zi Yan wrote: > Yes. Will change it to new_nr to be consistent. uh, you're going to call ilog2? I think this would look less inconsistent if 'nr' were an unsigned long (how long until we need 16GB pages? Think PPC already supports those)