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 F0746ED7BB1 for ; Tue, 14 Apr 2026 10:40:35 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 613CB6B0092; Tue, 14 Apr 2026 06:40:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5EB066B0093; Tue, 14 Apr 2026 06:40:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 500BB6B0095; Tue, 14 Apr 2026 06:40:35 -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 44CA66B0092 for ; Tue, 14 Apr 2026 06:40:35 -0400 (EDT) Received: from smtpin07.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 13A6B1404F5 for ; Tue, 14 Apr 2026 10:40:35 +0000 (UTC) X-FDA: 84656817630.07.32A6AFA Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf07.hostedemail.com (Postfix) with ESMTP id 5B21140011 for ; Tue, 14 Apr 2026 10:40:33 +0000 (UTC) Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=seAK4Xwk; spf=pass (imf07.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 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=1776163233; 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=XSVNJt6KFdXNdXdsxo8eTCRixnf4cEay2dS2e1CzLB4=; b=nRCyWQbvUx8H96j836JZ6tfNAMtUvEB3MO9Kdfl8pf1of9Msq8kOeEJuJXpSh8CBzOtlxN XtdiCZoumEfizLxI0GHfUMjStfj+BjfKsSeOVWGVttqhgxueLL4m2jJN/0Qw5RD4PQOAXs OLS1Vw2gd1gdpoMm0xpeI5cgexf83O8= ARC-Authentication-Results: i=1; imf07.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=seAK4Xwk; spf=pass (imf07.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1776163233; a=rsa-sha256; cv=none; b=bUbwWxG8OFVc5LCoPgk9+g7mvpGdOh+MI03yleJMJWpQ24U93cs8Yy/EN8adK9i0CU7vsS VfRHlJs31S3ZVJKHa54DPBzrT2nkjKaSU5+bnPI1DTctPiWL3K08biT7T9Rw67L+mC5xor 7iIeAuEnmLKrEq2s0AB8xsVYlS3vNJY= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id BC25A6012B; Tue, 14 Apr 2026 10:40:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 67BE6C2BCB5; Tue, 14 Apr 2026 10:40:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776163232; bh=1A3OVVqVgKxNYzk0Y9ubnCiqCKbONv2qMUdyjMlJpdA=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=seAK4XwkqGwhd9CT0GkHtPXQqqJqDPbYjpYhuHG6y8x1byekuJHpgPRi7hVq1KoYy eQC6b9qeUXUTFLJijkyTocXAZKKN7K+U9JU8FI3iPntBUcPI84Sfx+L1E6SbGdiyq/ OuVtFPoIfkiop7bgZ+dxcjoh35KCAr/3PkQ6YyS0TdzVV3PPcek+POQL6WMXopaYAc TLtdxHz6RgBtKB0zaE0D1qJCc3pLLqy9wnm+ovh/SMk22lbEbtpOUgTjXU764V6CUs HMigvu6M4AUceyIXVArzdYI/O3sGEqa49fnJzgt/e+yZKoBxZffIMT2YNlF+aeFwEl KCY5DJQhLEUow== Message-ID: <77d4d591-5e70-4ba9-bd0f-9674c2a74d6d@kernel.org> Date: Tue, 14 Apr 2026 12:40:22 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 7.2 v2 04/12] mm: remove READ_ONLY_THP_FOR_FS Kconfig option To: Zi Yan , "Matthew Wilcox (Oracle)" , Song Liu Cc: Chris Mason , David Sterba , Alexander Viro , Christian Brauner , Jan Kara , Andrew Morton , Lorenzo Stoakes , Baolin Wang , "Liam R. Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Shuah Khan , linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org References: <20260413192030.3275825-1-ziy@nvidia.com> <20260413192030.3275825-5-ziy@nvidia.com> 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: <20260413192030.3275825-5-ziy@nvidia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: 5B21140011 X-Stat-Signature: a3x77rtbh6tnbutuyohdu9ik9sjrk4ni X-Rspamd-Server: rspam06 X-HE-Tag: 1776163233-332596 X-HE-Meta: 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 P4iBOqU3 DWnKfOzmDKY26cWmESAMokZkffUZWYv91xStGJVImMyKhWBlj0UdrAkepu1VTA8saYIENz6rZ9eySLaVwlyfW+33Q8dxY9AFb2fWU0J3SYJSPDnW4QPaysSrj9wZLR2KHllQvw8zCY+vgjoINTvAhIneKZxctRTodqjY6w78iG1XImDc0L2N9Y/fH5hny4UCwjcTSAccg3ESDyRfDvA4yvxxN+K0WwPRgqNwaJuC06XKrF5PBRK9xO35zpYYz8uIcwVHMJ/toeMAkW8LRV+Pr49I+dfQGXJ23I7PYV2yEAYpmo1Mb+scf0MdjYRSVk9IlGuSA8fB695ImU5UNKkK09YcPvoDuJIWWtMn6 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 4/13/26 21:20, Zi Yan wrote: > After removing READ_ONLY_THP_FOR_FS check in file_thp_enabled(), > khugepaged and MADV_COLLAPSE can run on FSes with PMD THP pagecache > support even without READ_ONLY_THP_FOR_FS enabled. Remove the Kconfig first > so that no one can use READ_ONLY_THP_FOR_FS as upcoming commits remove > mapping->nr_thps, which its safe guard mechanism relies on. > > Reviewed-by: Lorenzo Stoakes (Oracle) > Signed-off-by: Zi Yan > --- Acked-by: David Hildenbrand (Arm) -- Cheers, David