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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1020CC55179 for ; Mon, 3 Aug 2026 13:14:40 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 234B86B00AF; Mon, 3 Aug 2026 09:14:39 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 20BF26B00B1; Mon, 3 Aug 2026 09:14:39 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1221C6B00B2; Mon, 3 Aug 2026 09:14:39 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id EF4166B00AF for ; Mon, 3 Aug 2026 09:14:38 -0400 (EDT) Received: from smtpin19.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 7DB1BC066E for ; Mon, 3 Aug 2026 09:39:26 +0000 (UTC) X-FDA: 85059460332.19.6641761 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf04.hostedemail.com (Postfix) with ESMTP id AA6A640008 for ; Mon, 3 Aug 2026 09:39:24 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=CTW3o3um; spf=pass (imf04.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1785749964; h=from:from:sender: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:dkim-signature; bh=G7JjU4ooA85a6HMKOqAz8GampirGAdEOAJEDh++/oLA=; b=o3lq1rXWMCXgtD4lOIOYbZs0bFESdfvJ0oupyk0wL9JtJCAQ1ubIs3d/MP27/9tg/k1gqr cGJvJBXVY0ZpQJPYUm/GkEYwF2mFIbn9b+Tx6zN0X0e/YdMntHkzqhpv0CoygSxZq0f0/l xlaP2EoS2w71r70Vw+TK30jxBzs7lu8= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=CTW3o3um; spf=pass (imf04.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1785749964; b=IPYudes3OJOOdYWe9k3TgUm1OpNuqXNkD35sCu+pI6Bsj3qUmZQVxuEKv+ujWO22Qc/+Fv O15PxFrc8Rm3d/BxyZU5jQXG2dRdRRmLKtpjutpwgupCnB/dnybhYPeA0drgT+zMKeQc87 nHg+CTZ6CyumnRR9lbRKHjg26oCVdbE= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id C45DE41578; Mon, 3 Aug 2026 09:39:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C3531F000E9; Mon, 3 Aug 2026 09:39:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785749963; bh=G7JjU4ooA85a6HMKOqAz8GampirGAdEOAJEDh++/oLA=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=CTW3o3umAUW5i3xZFQFPZWNNC+eznu5VcXbR94t32vqQzdG4pXucsis/KnVxBUJ7a CsDnu+Lq6WltnFb8vy1kfVbBUXJ5n7U8GZQMQB/n9XpCY2lL1Zf7XgWsDndR3wMhXx C1AONjihG1SRW9D2z/z1RhG2l08NkV1HFHiQZGS6cPs7r17Kz/aVAvgU3C5Ons8KM3 Q8d1+IG2D6FzlYMdUsdFT/6rsLpY/b31cpAfYuCyKsMc4N+SSkaG/8jGFmX3f7A3g+ S7iFOaGC70kOFkj35OoE8rECH6orIFX3kMbdfXoT59PhrLhL+Rov5qFIN8uPjxsWuG V6DnzmasuYYpg== Message-ID: Date: Mon, 3 Aug 2026 11:39:11 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 04/15] mm: update print_bad_page_map() to show anonymous page index To: Gregory Price , "Lorenzo Stoakes (ARM)" Cc: Andrew Morton , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jann Horn , Pedro Falcato , "Matthew Wilcox (Oracle)" , Jan Kara , Miaohe Lin , Naoya Horiguchi , Rik van Riel , Harry Yoo , Lance Yang , Kees Cook , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Usama Arif , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Ying Huang , Alistair Popple , Peter Xu , Xu Xin , Chengming Zhou , Arnd Bergmann , Greg Kroah-Hartman , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org References: <20260729-b4-scalable-cow-virt-pgoff-v3-0-e8ecfefea812@kernel.org> <20260729-b4-scalable-cow-virt-pgoff-v3-4-e8ecfefea812@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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 B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+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: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: AA6A640008 X-Stat-Signature: ixkhsqxurkdc944i685om3smn5ik6xju X-HE-Tag: 1785749964-588967 X-HE-Meta: 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 4B36JYiA ONyzWLZ+2uzgkbjGWJ9w6Er4dmFcxGhet10zJ6s7dC8DsEodfrR84hd2xkU119iA3Wyh70KDhRMovLBpCY+qi6/pqhi522AqSvJmjboQNy3Sf6itXnBVUCjqCCewhLa15heh8JFRTw/lue0uC55YYtedcPJ+9Xvzg5UjCNNqSluhY8U9vpKVEpzYVfEMZCIFlFDOF7OtpBpllaN2n+e21l6PcyoZ6vlix9KZ838zcBX/Liy4vJnflSgDB1K1D2zTGxEhkY+Tm5QmsraZShT13wxLuWH9uVFxsOmuZ0D8Pze3nX3IlIYSJPNa3dXMpmla3sSIM/e9UxSV+RQzWwNwBuzc7XFPG9xFWS+rXEylfDTh1KclEBKMOiHc85xp606seD3FE Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 7/30/26 08:32, Gregory Price wrote: > On Wed, Jul 29, 2026 at 05:48:39PM +0100, Lorenzo Stoakes (ARM) wrote: >> This is potentially useful debugging information and matches the existing >> page offset provided. >> >> Use the raw __linear_anon_page_index() function so as to always output this >> value regardless of whether the mapping is file-backed or not. >> > > Begs the question whether we should mark the value based on whether > it is file backed or not, but i suppose you can gleen that from the > other printed values (anon_mem, mapping, vm_ops, etc). You mean something anon_pgoff_t or what did you have in mind? -- Cheers, David