From nobody Wed Apr 8 09:46:32 2026 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 13532ECAAA1 for ; Mon, 24 Oct 2022 17:48:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232752AbiJXRsr (ORCPT ); Mon, 24 Oct 2022 13:48:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57610 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232560AbiJXRs2 (ORCPT ); Mon, 24 Oct 2022 13:48:28 -0400 Received: from mail-pg1-f172.google.com (mail-pg1-f172.google.com [209.85.215.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22F8FBEAFF for ; Mon, 24 Oct 2022 09:25:10 -0700 (PDT) Received: by mail-pg1-f172.google.com with SMTP id 78so9047785pgb.13 for ; Mon, 24 Oct 2022 09:25:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=NPUA49DxSROeuVXUf5+5dYRiCRYwBmJzY7QehiBfLmI=; b=EV/G2vlr9ho5Ulkc8sroUJ+aLbRJoO3MY36vm4QL6xhuYyNjpL7Ar87vrlrAZ5Svm8 rbhIxyNU/WCYSM4dKZqJeI1a0HC2RhQzSx8q4R8RoowxZFSpPbFNOdbB5yGxYkkko3BM jE8lRkc7rPtLERNeVljXsu9Q7FuZGB/Z+DT7o= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=NPUA49DxSROeuVXUf5+5dYRiCRYwBmJzY7QehiBfLmI=; b=iGx6WnWYTmJljeqBa7FtZhIdSKl3+4KYJwgxEo9LBJBaAvtwSKpktkK6d67XRIXOOG XkxFJEsbbZOG/Nu2CQgHwauoCrKvNfPDWi3L9M4/Cf08VjKQHSHwFgvolY+sJ14QxmqS vmSmSc4kQLCnj3hlCgHKuy4N2fBoSO14ZuiVS25VbNuhjavVt9OSMIUgOBXpz64fGRkv KRmjTeD7nKr8An560JQWmDTjwpc7fqq5N/6ufm/PYsQ4ZICNW6dr/fDJJf1VPu/NaJul mH78Qan2enI/diQlJ77pqIP1PHFatjherp2BnL7oQF70lZooLFbjxRVOBLCPcEU+06xU 65iA== X-Gm-Message-State: ACrzQf1VQwf5+mgqxcpB/El5NJdlIyWl+qGk6IYOyFmZqDLOhsXMt4TC tW/PI7EwjTuZCvUXDp8c90vP+K5VbnuqJg== X-Google-Smtp-Source: AMsMyM5EFonOvy9fopvLRpCC4i2nP0zFo2rQ8ji+mKGlGBkOOwBqhOvFwJ26jDpavxcsyKnsulMEAg== X-Received: by 2002:a63:7304:0:b0:46a:faa5:700f with SMTP id o4-20020a637304000000b0046afaa5700fmr29794719pgc.253.1666627958807; Mon, 24 Oct 2022 09:12:38 -0700 (PDT) Received: from tigerii.tok.corp.google.com ([2401:fa00:8f:203:5f9c:c5bc:902f:3da4]) by smtp.gmail.com with ESMTPSA id u70-20020a627949000000b0056b8726d2d3sm5162pfc.157.2022.10.24.09.12.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Oct 2022 09:12:38 -0700 (PDT) From: Sergey Senozhatsky To: Andrew Morton , Minchan Kim Cc: Nitin Gupta , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Sergey Senozhatsky Subject: [PATCH 5/6] zsmalloc: break out of loop when found perfect zspage order Date: Tue, 25 Oct 2022 01:12:12 +0900 Message-Id: <20221024161213.3221725-6-senozhatsky@chromium.org> X-Mailer: git-send-email 2.38.0.135.g90850a2211-goog In-Reply-To: <20221024161213.3221725-1-senozhatsky@chromium.org> References: <20221024161213.3221725-1-senozhatsky@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" If we found zspage configuration that gives us perfect 100% used percentage (zero wasted space) then there is no point it trying any other configuration Signed-off-by: Sergey Senozhatsky --- mm/zsmalloc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index fa55e0c66f8d..40a09b1f63b5 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -790,6 +790,9 @@ static int get_pages_per_zspage(struct zs_pool *pool, i= nt class_size) max_usedpc =3D usedpc; max_usedpc_order =3D i; } + + if (usedpc =3D=3D 100) + break; } =20 return max_usedpc_order; --=20 2.38.0.135.g90850a2211-goog