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[2620:137:e000::1:20]) by mx.google.com with ESMTP id u2-20020a17090a5e4200b00226e74464f7si19645899pji.108.2023.01.13.10.37.08; Fri, 13 Jan 2023 10:37:14 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=pWCur2rp; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229806AbjAMRpr (ORCPT + 51 others); Fri, 13 Jan 2023 12:45:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229707AbjAMRo5 (ORCPT ); Fri, 13 Jan 2023 12:44:57 -0500 Received: from mail-pj1-x102e.google.com (mail-pj1-x102e.google.com [IPv6:2607:f8b0:4864:20::102e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DB84B88DCB for ; Fri, 13 Jan 2023 09:32:40 -0800 (PST) Received: by mail-pj1-x102e.google.com with SMTP id dw9so21662207pjb.5 for ; Fri, 13 Jan 2023 09:32:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:sender:from:to:cc:subject:date:message-id :reply-to; bh=Bn2AcuBT0fvJkrgHTd2c/hoZ5Zj/kmgAMB/+z6YAX20=; b=pWCur2rpr+gspyvTGpRl88k+TALS1FegKvKEk5jy/bubgZifooV2E8xf0QwIy++02H S6m6UDBMUkp29rQf5givNCDICZRrcuSYnr5JWNQwoofCzkPg27lB3WM8iemjZkiegent gZbScAP0cVBjTXPsZSjZaMuUINSbBzaW4GoWO6YB2tYc0tsAGUFkPISV4xPbIpahnytZ zyXkF3BdXK7ma9zdKYDJAn9w7aQ2Y6slaX4IZXxsd0/OTun3Y5snuWmt7nyPhnRhWFmi 2s4lKfwsbkPOlLighLxRNzpygU9yZ+0+C6Sm1Cjs4gI+jYXFnc+xzn0DpN4D6096Qusl OMSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:sender:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Bn2AcuBT0fvJkrgHTd2c/hoZ5Zj/kmgAMB/+z6YAX20=; b=d6iz/4ViCw1XRSbGtaPODFUtP3YWr6QddcqDsaQDZoQRHBlz7hI49fo2v8youZslGi cMDQHoZuyBG/cYVwC7DDCdh5cm6UPnttugQPdcJNow3oXC8vCd8ahVrGFOeIKNcGXTrk vc1TO7l7ywHk/gSlVhDaQBYKE0iTkNxr33gqaV0RwD+HJjXVRJErwEfi4AcFAipYo/6G Jt2yJU5R9JTJE6DGLg57zQb3MESXvfAcGntjF9JWmV7fHX8A3kEuFsvFiT8WY3a4tJ1R KNt5vNoyvFytrk5cJxSSB6N9AsZf+vhA4RGWiRp9397TDFrPHAGZgw2DsZmQFRNtGwGH HCwQ== X-Gm-Message-State: AFqh2kqm690WOsGd+9je8wFSJ4r9+jHO4gZxzN4TbzoH8lkHvGdyL1R1 Z8Gf7iBQ9e1FDmwJNnrfEpY= X-Received: by 2002:a17:903:2605:b0:194:799b:858 with SMTP id jd5-20020a170903260500b00194799b0858mr492364plb.10.1673631160327; Fri, 13 Jan 2023 09:32:40 -0800 (PST) Received: from google.com ([2620:15c:211:201:2e4e:fba:501b:3a8c]) by smtp.gmail.com with ESMTPSA id cp12-20020a170902e78c00b0019276616eb0sm14457459plb.83.2023.01.13.09.32.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Jan 2023 09:32:39 -0800 (PST) Sender: Minchan Kim Date: Fri, 13 Jan 2023 09:32:38 -0800 From: Minchan Kim To: Sergey Senozhatsky Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCHv2 2/4] zsmalloc: skip chain size calculation for pow_of_2 classes Message-ID: References: <20230109033838.2779902-1-senozhatsky@chromium.org> <20230109033838.2779902-3-senozhatsky@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230109033838.2779902-3-senozhatsky@chromium.org> X-Spam-Status: No, score=-1.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE, SPF_PASS 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, Jan 09, 2023 at 12:38:36PM +0900, Sergey Senozhatsky wrote: > If a class size is power of 2 then it wastes no memory > and the best configuration is 1 physical page per-zspage. > > Signed-off-by: Sergey Senozhatsky Acked-by: Minchan Kim