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 7C1E9CE7A89 for ; Mon, 25 Sep 2023 03:59:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231792AbjIYD7J (ORCPT ); Sun, 24 Sep 2023 23:59:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47746 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231800AbjIYD7B (ORCPT ); Sun, 24 Sep 2023 23:59:01 -0400 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC985109 for ; Sun, 24 Sep 2023 20:58:41 -0700 (PDT) Received: by mail-pf1-x42e.google.com with SMTP id d2e1a72fcca58-691c05bc5aaso4652656b3a.2 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=FWs1ruhzVcHzLdEBJG+uF9SQ0w4w1uDXdFCtVXjRWNsBHh6WXXs/zY4TB1yTRhW5vM +hGeX9qEALD/9zKibCvBkGEseOzOLsGdjmVR+KTEq0d812DHYkUFWu88omZUy6gLa+mA ZANoWaMeBIGYneHN0+f4gLEBsyrRnNvVlv5R0RsXZbj81odISp3j/0MYphEiwGBR6o3A EKbCH+SUtSfk9RpbwXfO6D+amfK09YLuoMFwZF3ll9g36Ed17X00Vh0lav3XmBXow5gK F2ffoALdbaUOUW245kG8EOf7FeuKvHtSe4yGFW38sETUzreA4e4jxCb/6s1GZHy00oDq h6lg== X-Gm-Message-State: AOJu0Yz0e6LLkhK2zOwTjPdM7rnXZJJZRJ9kXvAvPL97UBivPiU3C5S0 K1PfmHZrC0/rytBzuHaQmwsuwg== 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: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org 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); - mt->ma_flags = 0; + mt->ma_flags = mt_attr(mt); } EXPORT_SYMBOL_GPL(__mt_destroy); -- 2.20.1