From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-180.mta1.migadu.com (out-180.mta1.migadu.com [95.215.58.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9E7872FE0F for ; Mon, 22 Jun 2026 08:32:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782117142; cv=none; b=IhW9pY3c/Ye2RCkCOO/xxCG5ZhnYTQxRuvl3Ehfji8yRJeB7wZuvI9x3a5mSarS6QkH1Oj6AdK0Ixy1xGQy08U9v0CrlVc1Ulr6HABhwVIN6NFDe2j0FDhWJMepTPBSemMh3TxpuYJMYUKWoeTm11IWxYtxQe72KkKySixs1rH8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782117142; c=relaxed/simple; bh=CI9r8gXaJAJxDR/OSOHt5wIIPjuUUhwoEiqHNhKl8/M=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Eozoz0tBzLJCwp1T0PU+JPK9XV2BvxorGLRd/3Op9lyHDr0NeABVEw+ArTPWQRKkmfR18+suP3UVIIKLvODLqLSqf0VGLjhYh30U3Z7LIZga8i79vcAodDzh2rOlgjtQZoV1pK+bD10kMJKwu8n1JwTAXnOWcEsygmwe6Zrn2Zo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=KPfb0Qlk; arc=none smtp.client-ip=95.215.58.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="KPfb0Qlk" Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1782117129; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3XMCUdWNUTNxQ+9ZHfsfx1rhff+sOJFnxDlJ/S/dO+Q=; b=KPfb0QlkKAZcla/m1msSiD/Q3b06hIc5jEUOmF+RO2/tSrKJxZbuq4hvqnOM+U5bwS9nVL GNby/UkJZ564BXhs/sDkhvG0gxcthGULbOPT7lkeIlBp+vwUEe2VqRLkcCchM+4khUamlY 91m+a8VjMqhp4fFF2bjIHTcdz4ORzkQ= Date: Mon, 22 Jun 2026 16:31:27 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH] mm: mglru: fix stale batch updates after memcg reparenting To: Peiyang He , akpm@linux-foundation.org, david@kernel.org, kasong@tencent.com, shakeel.butt@linux.dev, baohua@kernel.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, hannes@cmpxchg.org, harry@kernel.org, muchun.song@linux.dev, mhocko@kernel.org, roman.gushchin@linux.dev, ljs@kernel.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Qi Zheng , stable@vger.kernel.org References: <5A9E929D82717101+12fcf643-efb8-4b9a-a53a-1e28cc894f0b@smail.nju.edu.cn> <20260622073703.79258-1-qi.zheng@linux.dev> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Qi Zheng In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT On 6/22/26 4:24 PM, Peiyang He wrote: > Hi Qi, > > Thanks for confirming this bug and proposing the patch. The fix I previously proposed was indeed incorrect. I have applied your patch and tested it using the PoC script that previously triggered the warning; no warning is observed anymore. Good news. Thanks for testing this!