From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 E5E9314B96E for ; Fri, 1 Aug 2025 15:34:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754062444; cv=none; b=T03toT6VR+kwRA4Hmgnd5dz7d/ZMVhSan4iL0BrGRPfYq2NnKYX3S7KNtiY2k/mV/C3C/DuwbZmy3jLKEJp+PyiW6MJc/0r9EqJilyl0h6IIE0zqJ+gU9lZaCn6pyhV9xpQZS7IoCGhZLiXZqLoIjHzzvc1plQdzQ0KCjfybpes= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754062444; c=relaxed/simple; bh=thcdEu99pNDEp9JrPdMGIyb+am9KDemFmiO0S6PEYts=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=qoqqpD1UbJp+bV15p6j5cMwlFUfZ7FvG+67Fwogy8L8C/XEMYZrnuura6oPjlX+TRAp5AC37jhczmty0YzaD2sofGUvj7vuPGIZcHuMzeB3TVUkygxSeGUXG5IFz7dq0MBPcUHpeooWov55hirBNXz0OoNKrnpTzqerRzkBWhSQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=ZYbekagL; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ZYbekagL" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1754062441; 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:autocrypt:autocrypt; bh=JHgBzHC9Il8/iD1hFbNzn8RBxkEg4S2pBSlpVReUImg=; b=ZYbekagLtj65JDZ89cqE4XuntVSEBBhNvt+sXogw999U7xD8sdZJ1sPz+BXcIlVBgxqKm8 7ovHDQxmbH2Vh4kxrn5+NtygnqSy3kxfMrbNNgFjYc75XSXlLd0WrYBzyeFtt+p8PwTOgR TTNFhZVR6c8cAyxT862GnU6lICPGqyY= Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-529-lDR8EZDxOHSyB7DveXHi5Q-1; Fri, 01 Aug 2025 11:34:00 -0400 X-MC-Unique: lDR8EZDxOHSyB7DveXHi5Q-1 X-Mimecast-MFC-AGG-ID: lDR8EZDxOHSyB7DveXHi5Q_1754062439 Received: by mail-wm1-f69.google.com with SMTP id 5b1f17b1804b1-455f79a2a16so22902025e9.2 for ; Fri, 01 Aug 2025 08:34:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754062439; x=1754667239; h=content-transfer-encoding:in-reply-to:organization:autocrypt :content-language:from:references:cc:to:subject:user-agent :mime-version:date:message-id:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=JHgBzHC9Il8/iD1hFbNzn8RBxkEg4S2pBSlpVReUImg=; b=H+9K/jyZzUd/WXxy7qq3pe5SZegwiCnuh5BxcfX8SJVdntKXeW5pdlRqnydqUiudlF fjTYu1IGJgAvxDYc64EeUt5F5NfPIhbFxgw+uQlfBfSxRIs/hwtKgEeDqAhlvC/fvoYm DG9zYXnXLr/A2Ibl4C+geUubR0lT+apo2h2tAPeHzVzTI8uilumjQfpNCNR6RwiqBL/m dRaceW+4G+Sv570UO2JaoVmpBUaUYp/Y+I4CtuTazDDRAZDjonPVKJLothUCAPRrwEOQ jLBLITxYoqPT+FNGrBv3jTg2/leRqRGce89fUtClTLG82MyWIXzC1kQIvQTtwGbAWtOA CQ0A== X-Forwarded-Encrypted: i=1; AJvYcCVRvXoxDIJqCFI/njzYC0yiU0yWFuD5eQVhaNu+jM8/S0cZtLhMgtu2KpdcvD5EETSdr2RyYrnTEvT8Qg==@vger.kernel.org X-Gm-Message-State: AOJu0Yz+4nPuM0d6COBbDE049bT5b+BJj28NRrw6PirYd8wSb3Gwejh/ 4q/1WdZ3rgKkv2zW1cTbFNnp5Ns2JhW/tqczUiyfph+BotECTBSU3L3/K7ke7B0hApEi+No4v6e 6Tp+QQOs4dzMZYTgoaJq5xSpJ9HsDYs+Dfm2Ki8RNGanqDdhixxSkchaYPxrjuHD2 X-Gm-Gg: ASbGncunmsakzwuk3zlecVC1tdsyK6QWg3JrYCZjqsgZzr7NB13hltsUayCdih5diBQ EDmihpX+1XxsOgjJNuprKfohs18S7KDBpVI7Sq540dZOvzEh+UXop9FYpJDrnZKFrQDWtFrYEZ5 VJ0Lq2O4CJsXTY+MnOlOF9hhvmKUDbShTXH3FAU2X/FOwf5OYUaO9dZp060dGQm1RMjA+VdoQqy OIOttfxUffBp3vvIwlxxRcXdg3wEfuerJ4wqTrH82kOz/97Q/PMIsa31+FC/SPfAxmchwA7TYyX fZ3YbORGPbcIy4UxCo7370o2NnAuiQcLhZ6Man1GGj6zDYWDdn4fApAScZnNkqZkVA22P927S45 KEOyeUikU6JD2PGm+03p4DUkorZAhMbeG++1E/IcTLweUbWt4D9Cuxp3yejXlgjur X-Received: by 2002:a05:600c:8812:b0:456:2397:817 with SMTP id 5b1f17b1804b1-458930ecbccmr78899115e9.13.1754062439549; Fri, 01 Aug 2025 08:33:59 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEVwQY4nbqQJMBDn5fImafjO6gVC20KrAkByKenJ+HrlbIwqOuIdKFnknmS+j6WRtdBcgZGsw== X-Received: by 2002:a05:600c:8812:b0:456:2397:817 with SMTP id 5b1f17b1804b1-458930ecbccmr78898885e9.13.1754062439134; Fri, 01 Aug 2025 08:33:59 -0700 (PDT) Received: from ?IPV6:2003:d8:2f20:7500:5f99:9633:990e:138? (p200300d82f2075005f999633990e0138.dip0.t-ipconnect.de. [2003:d8:2f20:7500:5f99:9633:990e:138]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-458953eb7acsm105359625e9.28.2025.08.01.08.33.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 01 Aug 2025 08:33:58 -0700 (PDT) Message-ID: <8368f30f-19dc-4272-bc36-13d6c2377bdb@redhat.com> Date: Fri, 1 Aug 2025 17:33:56 +0200 Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC v2 3/4] mm: add largest_zero_folio() routine To: "Ritesh Harjani (IBM)" , "Pankaj Raghav (Samsung)" , Suren Baghdasaryan , Ryan Roberts , Baolin Wang , Borislav Petkov , Ingo Molnar , "H . Peter Anvin" , Vlastimil Babka , Zi Yan , Mike Rapoport , Dave Hansen , Michal Hocko , Lorenzo Stoakes , Andrew Morton , Thomas Gleixner , Nico Pache , Dev Jain , "Liam R . Howlett" , Jens Axboe Cc: linux-kernel@vger.kernel.org, willy@infradead.org, linux-mm@kvack.org, x86@kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, "Darrick J . Wong" , mcgrof@kernel.org, gost.dev@samsung.com, hch@lst.de, Pankaj Raghav References: <20250724145001.487878-1-kernel@pankajraghav.com> <20250724145001.487878-4-kernel@pankajraghav.com> <87seibr7do.fsf@gmail.com> From: David Hildenbrand Content-Language: en-US Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAmgsLPQFCRvGjuMACgkQTd4Q 9wD/g1o0bxAAqYC7gTyGj5rZwvy1VesF6YoQncH0yI79lvXUYOX+Nngko4v4dTlOQvrd/vhb 02e9FtpA1CxgwdgIPFKIuXvdSyXAp0xXuIuRPQYbgNriQFkaBlHe9mSf8O09J3SCVa/5ezKM OLW/OONSV/Fr2VI1wxAYj3/Rb+U6rpzqIQ3Uh/5Rjmla6pTl7Z9/o1zKlVOX1SxVGSrlXhqt kwdbjdj/csSzoAbUF/duDuhyEl11/xStm/lBMzVuf3ZhV5SSgLAflLBo4l6mR5RolpPv5wad GpYS/hm7HsmEA0PBAPNb5DvZQ7vNaX23FlgylSXyv72UVsObHsu6pT4sfoxvJ5nJxvzGi69U s1uryvlAfS6E+D5ULrV35taTwSpcBAh0/RqRbV0mTc57vvAoXofBDcs3Z30IReFS34QSpjvl Hxbe7itHGuuhEVM1qmq2U72ezOQ7MzADbwCtn+yGeISQqeFn9QMAZVAkXsc9Wp0SW/WQKb76 FkSRalBZcc2vXM0VqhFVzTb6iNqYXqVKyuPKwhBunhTt6XnIfhpRgqveCPNIasSX05VQR6/a OBHZX3seTikp7A1z9iZIsdtJxB88dGkpeMj6qJ5RLzUsPUVPodEcz1B5aTEbYK6428H8MeLq NFPwmknOlDzQNC6RND8Ez7YEhzqvw7263MojcmmPcLelYbfOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCaCwtJQUJG8aPFAAKCRBN3hD3AP+DWlDnD/4k2TW+HyOOOePVm23F5HOhNNd7nNv3 Vq2cLcW1DteHUdxMO0X+zqrKDHI5hgnE/E2QH9jyV8mB8l/ndElobciaJcbl1cM43vVzPIWn 01vW62oxUNtEvzLLxGLPTrnMxWdZgxr7ACCWKUnMGE2E8eca0cT2pnIJoQRz242xqe/nYxBB /BAK+dsxHIfcQzl88G83oaO7vb7s/cWMYRKOg+WIgp0MJ8DO2IU5JmUtyJB+V3YzzM4cMic3 bNn8nHjTWw/9+QQ5vg3TXHZ5XMu9mtfw2La3bHJ6AybL0DvEkdGxk6YHqJVEukciLMWDWqQQ RtbBhqcprgUxipNvdn9KwNpGciM+hNtM9kf9gt0fjv79l/FiSw6KbCPX9b636GzgNy0Ev2UV m00EtcpRXXMlEpbP4V947ufWVK2Mz7RFUfU4+ETDd1scMQDHzrXItryHLZWhopPI4Z+ps0rB CQHfSpl+wG4XbJJu1D8/Ww3FsO42TMFrNr2/cmqwuUZ0a0uxrpkNYrsGjkEu7a+9MheyTzcm vyU2knz5/stkTN2LKz5REqOe24oRnypjpAfaoxRYXs+F8wml519InWlwCra49IUSxD1hXPxO WBe5lqcozu9LpNDH/brVSzHCSb7vjNGvvSVESDuoiHK8gNlf0v+epy5WYd7CGAgODPvDShGN g3eXuA== Organization: Red Hat In-Reply-To: <87seibr7do.fsf@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 01.08.25 06:30, Ritesh Harjani (IBM) wrote: > "Pankaj Raghav (Samsung)" writes: > >> From: Pankaj Raghav >> >> Add largest_zero_folio() routine so that huge_zero_folio can be > > [largest]_zero_folio() can sound a bit confusing with largest in it's > name. Maybe optimal_zero_folio()? I prefer largest, it clearly documents what you get. huge vs large is a different discussion that goes back to "huge pages -> huge zero page". -- Cheers, David / dhildenb