From nobody Thu Feb 12 10:34:33 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 75452C77B61 for ; Tue, 25 Apr 2023 11:06:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233252AbjDYLGD (ORCPT ); Tue, 25 Apr 2023 07:06:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233788AbjDYLF5 (ORCPT ); Tue, 25 Apr 2023 07:05:57 -0400 Received: from mail-pf1-x435.google.com (mail-pf1-x435.google.com [IPv6:2607:f8b0:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4FFD87ABF for ; Tue, 25 Apr 2023 04:05:51 -0700 (PDT) Received: by mail-pf1-x435.google.com with SMTP id d2e1a72fcca58-63b4dfead1bso4700984b3a.3 for ; Tue, 25 Apr 2023 04:05:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1682420751; x=1685012751; 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=/5HiaDQy1gV5OijIvJDqywUjC7+FvWItMLIDy/cp2lo=; b=Jmn8+k2SfFfgMhLQds+Cr0nlYahkoptl1RwDbzAx8AZV4daLWkUna/d9KpjCx2Rfy9 rmCt9o71sj3yTlbe6K2B/hk/W22x/AoY5gUneeoO2WZBUgG67nocT5AJKOv91QCs4JN+ DZCnL7fxyHriXlCninrD3Zk7URi4nUfnyi5EmbP/3Gha1H6bcYRPYa70gVOJDs6+9d0S qnpA6xJhk/rQJkofq1EEOa8tqw8D0zjeLVXFud06M0NuAFQZVoamUgVTSmw9Qqf/CECK aW9WKvh1ndvQxmuIyREMN2Zd+vYx5GuyPdQSabCRBc2itdPqh0hvHYca5F8MEElf7xn+ 3LeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682420751; x=1685012751; 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=/5HiaDQy1gV5OijIvJDqywUjC7+FvWItMLIDy/cp2lo=; b=JImxG/15/ZMWVbuUB4mDZm9pAsS8pR01sCQWrZ4vZvEW50TRZH9Is8AjlWZmqdLl1v 0yHE+OUc2/2/oHOfI5VV29iExnbugnmCtn/IcUY65dv/VRJwhCZ+W5uGZkSTGdPKG7AC N/dEUMeiIGHob3hPdSnxk7lxrVaiBwxTJXaB6uzpzLukWFNzTH9CDdgAgjyY+m8enkjY bwBeT+OlDZkucKUj2Wak0RyOe7QJ7mq9+YdRdQogfKWyosj3NlEmspYBpigr0ti4Eb2h TjHuzbSSUPNbWJ4uUO6PpPg+20SwEX2PnbOEQpUyY1XhznAopZB/dOCAfkfo9TQMNK9m qvBg== X-Gm-Message-State: AAQBX9eRenNvFqdlSv9aZwAPCxpPk9xCj4yv2wJmESS9W+SrUE3z5Evy rxUqf+B7os9FHefnMZKvOnxJ4Gu00uDaZlyYkes= X-Google-Smtp-Source: AKy350ZfhQmTsVjWSSkNdrmfeWoP+w6CU2sdxSf+zlZBnBd3DIyE6NNnISJz8v358g87ZS2LcR27eQ== X-Received: by 2002:a05:6a00:2d20:b0:634:7ba3:d142 with SMTP id fa32-20020a056a002d2000b006347ba3d142mr24767709pfb.10.1682420750817; Tue, 25 Apr 2023 04:05:50 -0700 (PDT) Received: from GL4FX4PXWL.bytedance.net ([139.177.225.236]) by smtp.gmail.com with ESMTPSA id u3-20020a056a00158300b0063f3aac78b9sm4422169pfk.79.2023.04.25.04.05.48 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 25 Apr 2023 04:05:50 -0700 (PDT) From: Peng Zhang To: Liam.Howlett@oracle.com Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, maple-tree@lists.infradead.org, Peng Zhang Subject: [PATCH 8/9] maple_tree: Remove the redundant check of mas->offset in mas_empty_area/area_rev() Date: Tue, 25 Apr 2023 19:05:10 +0800 Message-Id: <20230425110511.11680-9-zhangpeng.00@bytedance.com> X-Mailer: git-send-email 2.37.0 (Apple Git-136) In-Reply-To: <20230425110511.11680-1-zhangpeng.00@bytedance.com> References: <20230425110511.11680-1-zhangpeng.00@bytedance.com> 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" In mas_empty_area(), after mas_awalk() returns, if EBUSY is not set, then mas->offset must be valid, no need to check. Same in mas_empty_area_rev(), so delete it. Signed-off-by: Peng Zhang --- lib/maple_tree.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index 8bfa837b7b752..964214de2ed18 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -5305,13 +5305,9 @@ int mas_empty_area(struct ma_state *mas, unsigned lo= ng min, return xa_err(mas->node); =20 offset =3D mas->offset; - if (unlikely(offset =3D=3D MAPLE_NODE_SLOTS)) - return -EBUSY; - mt =3D mte_node_type(mas->node); pivots =3D ma_pivots(mas_mn(mas), mt); mas->index =3D max(mas->index, mas_safe_min(mas, pivots, offset)); - mas->last =3D mas->index + size - 1; return 0; } @@ -5365,9 +5361,6 @@ int mas_empty_area_rev(struct ma_state *mas, unsigned= long min, if (mas_is_err(mas)) return xa_err(mas->node); =20 - if (unlikely(mas->offset =3D=3D MAPLE_NODE_SLOTS)) - return -EBUSY; - /* Trim the upper limit to the max. */ if (max < mas->last) mas->last =3D max; --=20 2.20.1