From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 E0E732EFDB3 for ; Mon, 1 Sep 2025 14:00:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756735261; cv=none; b=Tqi3WNKyG1mBoWH/fUFp0LEIf5jPAygmJCHEVOjBuODtp6mpobcWwapds6WxGX0tKbEMrjqxO/0mrSClre+gwinRzlWeAFqR6il7YG0YeAMV0colldsvEerPi0He4C75QUdIk1NCp3BWKuzJZsRvI0RnUL1qSaRY64pqOgsFDf8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756735261; c=relaxed/simple; bh=A0rIjcIgYC8dyuUFStHv+vQbOBSmgcbpTN3EDpWY4Jo=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=XtiHBtyOGc3Jvvfg9Qa88zvSUgRuWJznL+WUc+kPzBH1mkEZazwbS+qV2vy/Mg/ey5RiKqsGG1/tayYYj9muybbpBPnXpbO4zLWNRjbxJL/JS+Ig8eKS1/Pj6TtgsIFqAoJfJPxSi1oQO12x+8R6KGENfQg//ZF3vSsR4Ma3BsQ= 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=erFv24g9; arc=none smtp.client-ip=170.10.133.124 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="erFv24g9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1756735258; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to: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=lx0LFME7B3AUa2/+kLMyCPk/GuDX6f91CgTqDnBJCDI=; b=erFv24g9Vv7P9jpa2Y7g0I9YspaAcYdnoAIpktwfzMahhMrZunvO8qZzX/+UWLFoB6GbQc w17htXkdOYGAHsmQPaDbwWuBcjHOVIStN2oh49bNXsQfH828K6DYlr4yoYhtddnjiD8UKu 2RFkc4Bh+t9m3D9OTd53S4a/13vaSkg= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-380-tzcW4mcMNsq8TSK_Oza6Xg-1; Mon, 01 Sep 2025 10:00:57 -0400 X-MC-Unique: tzcW4mcMNsq8TSK_Oza6Xg-1 X-Mimecast-MFC-AGG-ID: tzcW4mcMNsq8TSK_Oza6Xg_1756735257 Received: by mail-wm1-f70.google.com with SMTP id 5b1f17b1804b1-45b87609663so9695815e9.3 for ; Mon, 01 Sep 2025 07:00:57 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756735257; x=1757340057; h=content-transfer-encoding:in-reply-to:autocrypt:content-language :from:references:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=lx0LFME7B3AUa2/+kLMyCPk/GuDX6f91CgTqDnBJCDI=; b=BEr/0dGXgAUx+Y7ecHvYrWbBz1Vl+Cvz+T4VrrQ6DK1FDNZvGtxS9cJIsMXowddFZV rSyGPA5AfxBjqDfiRSXnIbNQbZVOcot9gFw9Q9oLByd9ztxOGtN4A6C8iYIxu3c19v7S mKkzccB+PfGh1iBa80EI2x4cLXUk+23Ly47tYq8oZFhxXNnRUnVe8As8pJE0E4TGl+18 UutlBONpTWfkvjg8pVKQn/dHnof8r+/l0MY/h7zIQhg9pBCEVmQX+Hg4HcDajMBuEZit yK1fevgMg8kW7iEc06ns1NhIsEj6sbnsHctlpMZTagT+gvnW0ygZCKS+ehp8AvBJtglC Wdug== X-Forwarded-Encrypted: i=1; AJvYcCUN++EtloOSXHOys0dDyiTYVJ7KN++xHuRgHTTOt7RmgVLvD+FnnUnfOd8qgabRR0TokaYKNLFZ/wcN@vger.kernel.org X-Gm-Message-State: AOJu0YyVZL+e6YS1aVgcxxPMSme9ardQLBCSaiYDDQClOVri3qfqDxa7 dZN7c1jHyH6GMG3Yo5qkEB2kPFixasuhnYGPLmoAx5wNGcjbA7l5VUhRHEyFaC3SZiUaRATo/zG CxAwyqdE4AXoLLRrdfB2Im7tq2n3gg+c5RG/8CKe9wLWYx8BOuxfV7rihABuQ4h4= X-Gm-Gg: ASbGncueMcaEPOocbY0L5Ftf+eqhQe9iByEjwveKIIWSTvh/Kt9rQdXQWjtCZEcyCTv GVnpcFD6Mky9IhOcTyrhqP0xFLERFFYEEZ5FW0APL1tHQe25IjKj2ZU69NH5xzIVxbWUCCPbfQV IjoTonPaJ20MmppBVH4VTcvoPdaqoeGGo31+Dr+vVEyQlSb4zkRLXpP9ZEZd6xINzgL7XdsnA1G nJjd0IMOi3dqP9D4bCx8kMOusnYH37T3gfYB2XngEW8/VPuOFw/QS/bMTeJqGKW56pdcXlqUgSt YPHymrge5mNlQalPBETb/I1llZJy/B0tHUELCjQXjaagyelVZYg4EqQm/iWdu7xGh0S9/ZDH6yV lsLr1H5PwTnNG57FHcMnArDdEAHmKQ4hp4mwF2gdlOcdwHnER6GIk5MYiHUlW9xC52RM= X-Received: by 2002:a05:600c:19ca:b0:45b:8b76:c734 with SMTP id 5b1f17b1804b1-45b8b76c9aemr51288865e9.17.1756735255055; Mon, 01 Sep 2025 07:00:55 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGKtDnpo7zdRn5kM2ivYNaIbBCzDVyMQFOSKKHTd6+Sf3l6DZcgbqTIv+QNYIMEkOQcJ2hrog== X-Received: by 2002:a05:600c:19ca:b0:45b:8b76:c734 with SMTP id 5b1f17b1804b1-45b8b76c9aemr51287845e9.17.1756735254313; Mon, 01 Sep 2025 07:00:54 -0700 (PDT) Received: from ?IPV6:2003:d8:2f37:2b00:948c:dd9f:29c8:73f4? (p200300d82f372b00948cdd9f29c873f4.dip0.t-ipconnect.de. [2003:d8:2f37:2b00:948c:dd9f:29c8:73f4]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-45b6f0c6fe5sm239195655e9.5.2025.09.01.07.00.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 01 Sep 2025 07:00:53 -0700 (PDT) Message-ID: <5ff7c9bc-1722-4d8a-ad2e-8d567216a4e4@redhat.com> Date: Mon, 1 Sep 2025 16:00:50 +0200 Precedence: bulk X-Mailing-List: sparclinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 10/12] mm: constify various inline test functions for improved const-correctness To: Max Kellermann , akpm@linux-foundation.org, axelrasmussen@google.com, yuanchu@google.com, willy@infradead.org, hughd@google.com, mhocko@suse.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, vishal.moola@gmail.com, linux@armlinux.org.uk, James.Bottomley@HansenPartnership.com, deller@gmx.de, agordeev@linux.ibm.com, gerald.schaefer@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, davem@davemloft.net, andreas@gaisler.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, chris@zankel.net, jcmvbkbc@gmail.com, viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz, weixugc@google.com, baolin.wang@linux.alibaba.com, rientjes@google.com, shakeel.butt@linux.dev, thuth@redhat.com, broonie@kernel.org, osalvador@suse.de, jfalempe@redhat.com, mpe@ellerman.id.au, nysal@linux.ibm.com, linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-fsdevel@vger.kernel.org References: <20250901123028.3383461-1-max.kellermann@ionos.com> <20250901123028.3383461-11-max.kellermann@ionos.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 ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZoEEwEIAEQCGwMCF4ACGQEFCwkIBwICIgIG FQoJCAsCBBYCAwECHgcWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaJzangUJJlgIpAAKCRBN 3hD3AP+DWhAxD/9wcL0A+2rtaAmutaKTfxhTP0b4AAp1r/eLxjrbfbCCmh4pqzBhmSX/4z11 opn2KqcOsueRF1t2ENLOWzQu3Roiny2HOU7DajqB4dm1BVMaXQya5ae2ghzlJN9SIoopTWlR 0Af3hPj5E2PYvQhlcqeoehKlBo9rROJv/rjmr2x0yOM8qeTroH/ZzNlCtJ56AsE6Tvl+r7cW 3x7/Jq5WvWeudKrhFh7/yQ7eRvHCjd9bBrZTlgAfiHmX9AnCCPRPpNGNedV9Yty2Jnxhfmbv Pw37LA/jef8zlCDyUh2KCU1xVEOWqg15o1RtTyGV1nXV2O/mfuQJud5vIgzBvHhypc3p6VZJ lEf8YmT+Ol5P7SfCs5/uGdWUYQEMqOlg6w9R4Pe8d+mk8KGvfE9/zTwGg0nRgKqlQXrWRERv cuEwQbridlPAoQHrFWtwpgYMXx2TaZ3sihcIPo9uU5eBs0rf4mOERY75SK+Ekayv2ucTfjxr Kf014py2aoRJHuvy85ee/zIyLmve5hngZTTe3Wg3TInT9UTFzTPhItam6dZ1xqdTGHZYGU0O otRHcwLGt470grdiob6PfVTXoHlBvkWRadMhSuG4RORCDpq89vu5QralFNIf3EysNohoFy2A LYg2/D53xbU/aa4DDzBb5b1Rkg/udO1gZocVQWrDh6I2K3+cCs7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <20250901123028.3383461-11-max.kellermann@ionos.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 01.09.25 14:30, Max Kellermann wrote: > We select certain test functions from mm_inline.h which either invoke > each other, functions that are already const-ified, or no further > functions. > > It is therefore relatively trivial to const-ify them, which > provides a basis for further const-ification further up the call > stack. > > One exception is the function folio_migrate_refs() which does write to > the "new" folio pointer; there, only the "old" folio pointer is being > constified; only its "flags" field is read, but nothing written. > > Signed-off-by: Max Kellermann > Reviewed-by: Vishal Moola (Oracle) > --- Also some getters hiding (and functions that actually implement logic -- folio_migrate_refs()) [...] > > -static inline int folio_lru_gen(struct folio *folio) > +static inline int folio_lru_gen(const struct folio *folio) *const ? -- Cheers David / dhildenb