From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qt1-f172.google.com (mail-qt1-f172.google.com [209.85.160.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D1B302DCBF4 for ; Wed, 3 Dec 2025 09:26:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764753970; cv=none; b=ucCLh7jwnj1xxP19FTQLlxJQLt/e+vLWfHUPz4F1f7q9tuZA3OPq2R6S1oKSfDBli0u008kHmhqhqkKB8sMj+aKiy/66MgFPiihgNaFSeHu//lpNnFe/hO/2Mj27MZGakJp0I9NSFhCjdJbLikhhgoto/Zi6uoNKAcu5+eJ1tSU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764753970; c=relaxed/simple; bh=FFa9Xd8pyQmNs53jEwQIsrhKjnhAnImjG65+dWbiHEY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VTfEpxnqLGDuGaQoGfnOTVP52j+qysKFyFuHSMZgiiFOLY0hhOo5knl1oPV1jgvGXPJNd4Ra41aOwop0dW8lJkeWNQ6GEWUm6b6EYHfJ1uwzFv6V+JW/1EOnqpiQ0jYDVA1yn2BXZJTqIkLGBFOt45e7UYIH/AQ+3cnpgLZsBQ8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gourry.net; spf=pass smtp.mailfrom=gourry.net; dkim=pass (2048-bit key) header.d=gourry.net header.i=@gourry.net header.b=Vgc9+CyW; arc=none smtp.client-ip=209.85.160.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gourry.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gourry.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gourry.net header.i=@gourry.net header.b="Vgc9+CyW" Received: by mail-qt1-f172.google.com with SMTP id d75a77b69052e-4ee1fca7a16so53215711cf.3 for ; Wed, 03 Dec 2025 01:26:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gourry.net; s=google; t=1764753964; x=1765358764; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=Tah9iA7LYO4yjBk7uiNqYdwsN3RihMO5xorllOIAWP4=; b=Vgc9+CyWGyAHB2JofvYhJePck5lTESlMf9ka0IfuOuFJAF2CF7WSVNi9d8R5EbSYSL 170101m3O6viQ+B+CB8WVZI02OljQZxHkbUit+ttPqpPU8al3UBMqELyPj/HeQQD65Ms w10W+NlOEf6ZfkKUaWZYK1O8fgk2Q/MonloPdlEgdGNakwzr959OdXwN+3+DkA0Dy3a9 qGYn3kSwvC4WM9wJzPfG5JtFEyW0eHA8O8TbIMW50dwZu1Wg04qkTvtjqnyVLXrs+UVS h/NinevtetdT32PeY8Q1tG1URYjnHcTFnKqAdoAtC01gp5XwR3AFFtS0tlKja4dohOq6 QFKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1764753964; x=1765358764; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Tah9iA7LYO4yjBk7uiNqYdwsN3RihMO5xorllOIAWP4=; b=ps5Pdc3/zvrtmbG94HyTEZKM34M4lGjcGsUyctGuESiTileSLU/oYRDC7sZ57PtZ2a DQCCkJ21uO4lQCHlzPqMjOfGceJ/osrcQJKyukVxfG2HDfyHb/lYKPLTpUi4BoCuJ07q 8yOIsYlUYm212US+KYGUBFM95YtKlcbvFZynNbr14MvxzNu0NI+EPVJexHxVq29A6jNi JpNYYVENoT0Z87UCVoTumAMX9qnU+Jo2r51LmJKfx8sHorsNKy63jFwzP12Hz4hwLcmP lrgH0hI3UEf73qAxToTr9Gbc1mBoRSOkBcLkLSZ9cNPoE1ADcKmsONwsbAuXrn0fQPOa wCKg== X-Forwarded-Encrypted: i=1; AJvYcCV/3ovvIxsI7b8bOa4in11lyOXowDeuPEBrF1GuujOMbJys28SJTGhaPOEJEoOcwGFKHi/ZG33ATdE44jo=@vger.kernel.org X-Gm-Message-State: AOJu0YznxH5QVB8mVSB4t/2rC6vJpTLGXU3T12nLHciQO+by3qghvEo6 dZxlpSFhbGjREXuuhtbeihcZI2JHwxohIfMvbplBU+P6h37+5nXfi0E8z/NuwSlm2h8= X-Gm-Gg: ASbGncs9dSpPBkNvEloqrqAqXsEWsm6GQbhQ2Bn2wUU7KY5DdYqYEbT92Qc9ykfb1tZ B8YFoXKK4Qf0zSLaABUnOoUZbxvRE5FXRJvyepFQ5v319uQWEBkFvCSgP3vT/C3RDErqDkTKeV2 XgNXaUfrGIrtvYQnFxz5sI/uigKLHJ/tCtQ7+EhKTjGlXn5klnBR8uJ6qN0qM+ngJhXy42B59jq aHJf09eavD5vjL/IyzJO+uhQ9ua2UNrfi06g7ymlZuAlXXV9pIRzSud1zoP0Mvm0CAqakqcxVEj VpCAkIfg9RNetDrujCf/OPhoOAbWGdR5A8TPZ3/xGLXtSDv7w+kvj3gZp0lfalIrhcbKfyD9GtK bhk6fNah5PjwBhODke/mTiEQDcPNZ3Wu2gq0irmZnMhjaWjKrSyDt4wsVjaz6sLIXyEFuKcdYNB JYu+p8kMVkgt3gV9L3KkOtgTOZQkGG/rKz3KLsWgnbmA+j8vZuRFyxyDcLf4k/6eo8PvEzVg== X-Google-Smtp-Source: AGHT+IGCFbc47aPEF11h47uDLP1j4N+ZFov86gzUBU4eKZNiHrSyBdqxK04QEbh3fwr2eha0kQT3gg== X-Received: by 2002:a05:622a:190d:b0:4ed:5f45:42c0 with SMTP id d75a77b69052e-4f0176bff73mr22805341cf.62.1764753964647; Wed, 03 Dec 2025 01:26:04 -0800 (PST) Received: from gourry-fedora-PF4VCD3F (pool-96-255-20-138.washdc.ftas.verizon.net. [96.255.20.138]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4efd341f2absm109317821cf.17.2025.12.03.01.26.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Dec 2025 01:26:02 -0800 (PST) Date: Wed, 3 Dec 2025 04:26:01 -0500 From: Gregory Price To: "David Hildenbrand (Red Hat)" Cc: Michal Hocko , Andrew Morton , Aboorva Devarajan , vbabka@suse.cz, surenb@google.com, jackmanb@google.com, hannes@cmpxchg.org, ziy@nvidia.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Oscar Salvador , Juan Yescas Subject: Re: [PATCH] mm/page_alloc: make percpu_pagelist_high_fraction reads lock-free Message-ID: References: <20251201060009.1420792-1-aboorvad@linux.ibm.com> <20251201094112.07eb1e588b6da2ee70c4641d@linux-foundation.org> <47a8b4d5-f4d2-4772-b1b2-ee96bc21e742@kernel.org> <9de2f7e2-a202-499d-8858-6936beb251d9@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Dec 03, 2025 at 04:23:20AM -0500, Gregory Price wrote: > What luck, I do! :D > And i just noticed it's the same page over and over > Should have noted: 6.13.2 but it's kind of a frankenstein's 6.13.2 with stable backports, so I don't know what's been fixed between 6.13 and latest. If there are relevant patches I can search for whether we have them. > [ 3404.119270] migrating pfn c06f176 failed ret:1 > [ 3404.129152] page: refcount:4 mapcount:0 mapping:0000000061ca20ba index:0xad28e5b pfn:0xc06f176 > [ 3404.148284] memcg:ffff88842e855000 > [ 3404.155834] aops:btree_aops ino:1 > [ 3404.163193] flags: 0x17ffff066c00420c(referenced|uptodate|workingset|private|node=1|zone=3|lastcpupid=0x1ffff) > [ 3404.185408] raw: 17ffff066c00420c ffffc90066a13ca0 ffffc90066a13ca0 ffff88812b8502f8 > [ 3404.202603] raw: 000000000ad28e5b ffff888859fd42d0 00000004ffffffff ffff88842e855000 > [ 3404.219779] page dumped because: migration failure > ~Gregory