From nobody Tue Feb 10 12:57:26 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 5E985EB64DC for ; Thu, 15 Jun 2023 13:10:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245582AbjFONKi (ORCPT ); Thu, 15 Jun 2023 09:10:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59152 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245732AbjFONKb (ORCPT ); Thu, 15 Jun 2023 09:10:31 -0400 Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E08B270A for ; Thu, 15 Jun 2023 06:10:30 -0700 (PDT) Received: by mail-pl1-x632.google.com with SMTP id d9443c01a7336-1b3c578c602so33358115ad.2 for ; Thu, 15 Jun 2023 06:10:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1686834629; x=1689426629; 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=t8uMjI1Tkwt5zl80wRd5zFszf8LWrgvycYShg8nZg9U=; b=l1V7kQJL3oyDCiUF/OX7fjrtf7DZRR7RI2GYk9oEhjuwS5LI2YqP0f4o3ddXjCWQWS xXdKgruRFLIYy+1PhD7MZSSVXOb6BErBtCQdSZQMObTLlY0qM+CKupkWJNruRGfSEmfc oW41beRbt3HRy9w2l2O1DcWBYDVPZiSG2DRRkkjsbHsDACrSHKZOVAp8ZqhW1aIdEUbH Au/zWMZPo2SzO8wN9yNtmxVPcruM3FvQe3k5BqqCXDFBmNRDX1koxSPrzHPpuCff26iy h7xcxA0B3BRnkC6K8fQClPedS2wE6D3qIGnyt/NxBtZZFqlppa+0JXPsytq4Fu6UJTAy HIiA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686834629; x=1689426629; 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=t8uMjI1Tkwt5zl80wRd5zFszf8LWrgvycYShg8nZg9U=; b=PLgyLAUmFImtLKtIwn38q17KfDTPb2HlwFEbaA+ORjqtmhM+7sQv8VF1zxvomf8J45 fIBcGeNCnHzHZXKPSuDoS1uPLPbvcCOM5r5lJPgZ8uhBkwhnNbNrdZ3neA+pdgj34ayV cZVAD1++TdxIdC5P7oqu1lbdqSYRrAGtvVrNkKJ/jCGzbLpwZ6Qs0/ghjBNrLW1HSEVH qPhiXiYGxNkPKuM/XLQBdTiqNBwq/yhi0Di8mz76SS3lAzGmFFzHroFRX2LEJz4H2eLr 58dJhOK90/0ZO9QPUbKbD1nb5EWwsYBnI/jgNS2W/rwXA3hGzLDgNbAtfMcvvc0vz3ie C8Hg== X-Gm-Message-State: AC+VfDzDg44Y1QaJjL/vJmxudUNS8j6fgthik5usRnf6BZvVi6fD7FCB zf+c6nh7yMV/SAuia2aFIvlqXw== X-Google-Smtp-Source: ACHHUZ5rliJjSYTDmlWHluKhK3fS/k6VkVj5cW2hkY6zYL+BLggnSeHKeKWIJy07Iu0sbBZ66yxn1A== X-Received: by 2002:a17:903:41ce:b0:1ac:8837:df8 with SMTP id u14-20020a17090341ce00b001ac88370df8mr17054187ple.6.1686834629690; Thu, 15 Jun 2023 06:10:29 -0700 (PDT) Received: from localhost.localdomain ([139.177.225.249]) by smtp.gmail.com with ESMTPSA id x1-20020a170902b40100b001a804b16e38sm14036019plr.150.2023.06.15.06.10.24 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 15 Jun 2023 06:10:28 -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 1/8] maple_tree: set the node limit when creating a new root node Date: Thu, 15 Jun 2023 21:08:52 +0800 Message-Id: <20230615130859.21858-2-zhangpeng.00@bytedance.com> X-Mailer: git-send-email 2.37.0 (Apple Git-136) In-Reply-To: <20230615130859.21858-1-zhangpeng.00@bytedance.com> References: <20230615130859.21858-1-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" Set the node limit of the root node so that the last pivot of all nodes is the node limit (if the node is not full). Signed-off-by: Peng Zhang --- lib/maple_tree.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index 279b871f21a6..23202edb9f1e 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -3692,7 +3692,8 @@ static inline int mas_root_expand(struct ma_state *ma= s, void *entry) mas->offset =3D slot; pivots[slot] =3D mas->last; if (mas->last !=3D ULONG_MAX) - slot++; + pivots[++slot] =3D ULONG_MAX; + mas->depth =3D 1; mas_set_height(mas); ma_set_meta(node, maple_leaf_64, 0, slot); --=20 2.20.1