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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08C7BC54EBE for ; Mon, 16 Jan 2023 21:39:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233953AbjAPVjR (ORCPT ); Mon, 16 Jan 2023 16:39:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39280 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234045AbjAPVjQ (ORCPT ); Mon, 16 Jan 2023 16:39:16 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9CDC82BED5 for ; Mon, 16 Jan 2023 13:39:15 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 36F6F6112F for ; Mon, 16 Jan 2023 21:39:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 830FCC433D2; Mon, 16 Jan 2023 21:39:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1673905154; bh=5BvnXYITYg4ZDlZLuJbk0FgdzfRUJQopwZGDbQnmysE=; h=Date:To:From:Subject:From; b=dmbf8VI1eGf/5EbFwGe6ztSAey4MC8Dn6JUbJNeu0S4A9B+GtepvLAgkiTORzp5a4 C1t7SY2d6IG3IjErucwxJqv6NgXic1ljdBDV3vOY/+V6mWHXAgvc1cvRvwJLaY7cd3 msRNJzPR1SENZHnOtj1yn8dRFPG7z9UsuxwYWCHQ= Date: Mon, 16 Jan 2023 13:39:13 -0800 To: mm-commits@vger.kernel.org, minchan@kernel.org, senozhatsky@chromium.org, akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] zsmalloc-skip-chain-size-calculation-for-pow_of_2-classes.patch removed from -mm tree Message-Id: <20230116213914.830FCC433D2@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: zsmalloc: skip chain size calculation for pow_of_2 classes has been removed from the -mm tree. Its filename was zsmalloc-skip-chain-size-calculation-for-pow_of_2-classes.patch This patch was dropped because an updated version will be merged ------------------------------------------------------ From: Sergey Senozhatsky Subject: zsmalloc: skip chain size calculation for pow_of_2 classes Date: Mon, 9 Jan 2023 12:38:36 +0900 If a class size is power of 2 then it wastes no memory and the best configuration is 1 physical page per-zspage. Link: https://lkml.kernel.org/r/20230109033838.2779902-3-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Acked-by: Minchan Kim Signed-off-by: Andrew Morton --- --- a/mm/zsmalloc.c~zsmalloc-skip-chain-size-calculation-for-pow_of_2-classes +++ a/mm/zsmalloc.c @@ -2370,6 +2370,9 @@ static int calculate_zspage_chain_size(i int i, min_waste = INT_MAX; int chain_size = 1; + if (is_power_of_2(class_size)) + return chain_size; + for (i = 1; i <= ZS_MAX_PAGES_PER_ZSPAGE; i++) { int waste; _ Patches currently in -mm which might be from senozhatsky@chromium.org are zram-correctly-handle-all-next_arg-cases.patch zsmalloc-make-zspage-chain-size-configurable.patch zsmalloc-make-zspage-chain-size-configurable-fix.patch zsmalloc-set-default-zspage-chain-size-to-8.patch