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 532C6FED3C0 for ; Fri, 24 Apr 2026 12:43:50 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id BCFD66B00AB; Fri, 24 Apr 2026 08:43:49 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id BA6976B00AC; Fri, 24 Apr 2026 08:43:49 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id ABC196B00AD; Fri, 24 Apr 2026 08:43:49 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 992716B00AB for ; Fri, 24 Apr 2026 08:43:49 -0400 (EDT) Received: from smtpin26.hostedemail.com (lb01b-stub [10.200.18.250]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 5EB3214012E for ; Fri, 24 Apr 2026 12:43:49 +0000 (UTC) X-FDA: 84693416178.26.AA48B1C Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf12.hostedemail.com (Postfix) with ESMTP id 9771240004 for ; Fri, 24 Apr 2026 12:43:47 +0000 (UTC) Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=I3P0LkNV; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf12.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1777034627; 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=druxK2dfx1TEdnaNvtTnQTdmqu7QkH26d/6ObxNc1W0=; b=tK5BtudkFbO2SEsAF46z6BwHtaI+zmyS9oSePyYmDygwwjCPAsHMb+fd7z6ZpbbmvLpmeW TOriD/U8KmNz7re9JuxzsV7HbjRLw5pQcphUnFHIgyuZoaIJZmp7uU04Q8yFbfUChL9RUm z4lFG8wLbjx7UApibHGuttbRAgim0b8= ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=I3P0LkNV; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf12.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1777034627; a=rsa-sha256; cv=none; b=RTEGUtvC83DliOk3s0Iwc6xCS0QfGy9MomY1jYqrIkEnTY4hufN6jzqIrpHvZ5Z86Ajr87 cbFKXF7iBxLkdHvTCNaL5Pf+slpYyWdj6ia+bceDKYeATwnHef8k46sZkkK2Vw1vjwszRu zV7kPEJdX6N+7rOx/3RnjXbis6K7rh4= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id EFF4C6001A; Fri, 24 Apr 2026 12:43:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5254DC19425; Fri, 24 Apr 2026 12:43:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777034626; bh=LxPmp8iQxWz2eBbEuseV1mCBeRehEkx6aKC4TqxZp+c=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=I3P0LkNVz83U0Cahye4rRm93gn2CHTINURKRHKmewgLZGDlZxZaglfDH4YJTki7NL 85GtNEHiW8+dqmsHnT1+LLH04gANvNF5nG+51H/rEVo705TfWxR/7l0alTstw3rRIO x5Y0WMgrC2h6cY60htl0N+wBPjMFGOWrqt4dBA2xhjFySbZ+Rb2YdhWodH10Y0vkDl VMAQ+HiUplc6451tvIzg15Q9HL58ey8LBG6YaFFZubhCpwApvtJngBJ0XSWSYC7VUN J10yHfTn/BUHc5yuLO0AB+4UmYUj3KDD1MosTe/2BLCjQx9JaMkGav5YIXZu12+Hhv ShtwgiezhBKmQ== Message-ID: Date: Fri, 24 Apr 2026 14:43:37 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 7.2 v4 03/12] mm/huge_memory: remove READ_ONLY_THP_FOR_FS from file_thp_enabled() To: Zi Yan , Andrew Morton , "Matthew Wilcox (Oracle)" , Song Liu Cc: Chris Mason , David Sterba , Alexander Viro , Christian Brauner , Jan Kara , 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: <20260424024915.28758-1-ziy@nvidia.com> <20260424024915.28758-4-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: <20260424024915.28758-4-ziy@nvidia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 9771240004 X-Stat-Signature: qz9duqqgp5fo8bm9oqjah16o4sst7t1d X-HE-Tag: 1777034627-497203 X-HE-Meta: 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 BMrDLalC LcHvEN7U6HkM9Vk+dyXLTbY7OCj8Qzv1KUv//CcYHGTlVlsNBCUGoLHKShIO1cT2vzSrNU0egTuRmrZRRQYVfGhGJeQ3aloYseRBGPZvWvBdRVACA9/ei/uzCm53kzvXbZy/GSSaqnwaMY3cYLePkbMugsK/ImAnVyzb3xsMubEoI/8/e85+3aTALwWOsmrzVIFSv1LX7bHVD5wqYkh7PwoukkyjyNC38XKKi7rmHhn5mzikhe/Jo8YzZcscNQqNbJIlbn2LpZxqELpIGCdikYdyTHPmgYIIGRbCxyI5nrOjZ9kA0MMjeD0sv5UpoQQcoupszIRwaVAzdrwezARERWv9Kb5ZugEEYAaQeyIQzLonXqKBCEENQja/M2A== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 4/24/26 04:49, Zi Yan wrote: > Replace it with a check on the max folio order of the file's address space > mapping, making sure PMD THP is supported. Also remove the read-only fd > check, since collapse_file() now makes sure all to-be-collapsed folios are > clean and the created PMD file THP can be handled by FSes properly. > > Signed-off-by: Zi Yan > Reviewed-by: Baolin Wang > --- Acked-by: David Hildenbrand (Arm) -- Cheers, David