From nobody Fri Feb 13 14:19:48 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 16FDDCE7A81 for ; Mon, 25 Sep 2023 03:59:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232009AbjIYD7x (ORCPT ); Sun, 24 Sep 2023 23:59:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231799AbjIYD7Y (ORCPT ); Sun, 24 Sep 2023 23:59:24 -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 F221210D for ; Sun, 24 Sep 2023 20:58:41 -0700 (PDT) Received: by mail-pf1-x435.google.com with SMTP id d2e1a72fcca58-690d8fb3b7eso4946932b3a.1 for ; Sun, 24 Sep 2023 20:58:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1695614321; x=1696219121; darn=vger.kernel.org; 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=mGF6lWn34y725CVIBLiDuCLlZ/D9mfCg2VPUJce9YQs=; b=M/v/vjTrVyE+W85fdWa0awcxSStSWeglGcdH015ydpFVQEh4YokywwsZPSRplczS6s kZrsuIanxSb1vmhLk6aIFRWc0+NvuYshY7BLiPJ94xHxcm3SHiXR3l84vbUT4jIZgiDz kiFYJaP7UcFP5Hf1iseif2xwPz/9hB2j1+oUZX/0QXBQ+3sg0hfwvCMfbchrypuKa9SE 4Wj+MqmJxuQ5ikjNi4bDoNTaQjDXP5XlfJkPbzdQqhekugZIUBtJiph/PiiJsfgmUN3i XwN4nTIiDSETUudLS69n9v+6jRBMk35f3BRE2sdh/mxcKX7b2P4Ef+LDBEbcNoSVjviz difg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695614321; x=1696219121; 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=mGF6lWn34y725CVIBLiDuCLlZ/D9mfCg2VPUJce9YQs=; b=MT3BfMUdQNrefQCaze+9dY7Sa5mmdzINRyorduTuGMZQo97cmT5dTS7vHI2Er5BisZ kIuO6NsTNOGbgWa6geCf+MgDg2tWfh8TQDJndURFNOrHNZ2BZ2Sk8L61l20VV28092Ku 4kPZgYlnWjbMEdLo/q03rzqrRyD/QHTa2hEVDdLeAQVObbByxTlulKiETBJXFnQFgqQk x2leH9+QZC42rF8Uxljsm2z7HDPiTXfX0TgXe4lNvXn32BcEz0AHqJkvbryreSefjBee yYvaXwogH/NdztalODHKvL4fPCofQ5ig+IwwmHOtRSgpXQoAK6xeXKavSl5IE91Mhz7i Gz6w== X-Gm-Message-State: AOJu0Yy0pBi35pMCNAIcLrxbTkW69ez3i1Bd7IPK8tGQ28aqYwTzY6rr HKDTC34EtzsCKXuDMLSpwPFoOQ== X-Google-Smtp-Source: AGHT+IHoddrSbePl0h4D+bftYrSW0wEgeAhFg5zR31drbaOxp/x1GgBhKmsKHC902H8CQivLgFilqQ== X-Received: by 2002:a05:6a00:228a:b0:692:b8b9:f728 with SMTP id f10-20020a056a00228a00b00692b8b9f728mr7716486pfe.30.1695614321440; Sun, 24 Sep 2023 20:58:41 -0700 (PDT) Received: from GL4FX4PXWL.bytedance.net ([203.208.167.146]) by smtp.gmail.com with ESMTPSA id fm1-20020a056a002f8100b00679a4b56e41sm7025387pfb.43.2023.09.24.20.58.34 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 24 Sep 2023 20:58:40 -0700 (PDT) From: Peng Zhang To: Liam.Howlett@oracle.com, corbet@lwn.net, akpm@linux-foundation.org, willy@infradead.org, brauner@kernel.org, surenb@google.com, michael.christie@oracle.com, mjguzik@gmail.com, mathieu.desnoyers@efficios.com, npiggin@gmail.com, peterz@infradead.org, oliver.sang@intel.com Cc: zhangpeng.00@bytedance.com, maple-tree@lists.infradead.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH v3 8/9] maple_tree: Preserve the tree attributes when destroying maple tree Date: Mon, 25 Sep 2023 11:56:16 +0800 Message-Id: <20230925035617.84767-9-zhangpeng.00@bytedance.com> X-Mailer: git-send-email 2.37.0 (Apple Git-136) In-Reply-To: <20230925035617.84767-1-zhangpeng.00@bytedance.com> References: <20230925035617.84767-1-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" When destroying maple tree, preserve its attributes and then turn it into an empty tree. This allows it to be reused without needing to be reinitialized. Signed-off-by: Peng Zhang --- lib/maple_tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index ed8847b4f1ff..ad06105f1a54 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -6670,7 +6670,7 @@ void __mt_destroy(struct maple_tree *mt) if (xa_is_node(root)) mte_destroy_walk(root, mt); =20 - mt->ma_flags =3D 0; + mt->ma_flags =3D mt_attr(mt); } EXPORT_SYMBOL_GPL(__mt_destroy); =20 --=20 2.20.1