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 2A87F107760E for ; Wed, 18 Mar 2026 20:45:42 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 65DB66B02CF; Wed, 18 Mar 2026 16:45:41 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 635D76B032E; Wed, 18 Mar 2026 16:45:41 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 54B146B032F; Wed, 18 Mar 2026 16:45:41 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 425216B02CF for ; Wed, 18 Mar 2026 16:45:41 -0400 (EDT) Received: from smtpin18.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id F06D1C0841 for ; Wed, 18 Mar 2026 20:45:40 +0000 (UTC) X-FDA: 84560364840.18.B69C550 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf09.hostedemail.com (Postfix) with ESMTP id 307A6140018 for ; Wed, 18 Mar 2026 20:45:39 +0000 (UTC) Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b="tU3bf1/p"; spf=pass (imf09.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=1773866739; 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=WUTkbyVFip6Wbeky4xXvQswrmPp3VybkE/qv7sI4E9A=; b=6Jk8b8+B70s3Jt0at8USyOBKtww6J6zwFDeVMnDr1IIlcxRGZsFAN2HhnlwMS5CRvMnIQJ EDUX3YjvOho8TbbE72pzT1g+zeeuG4aLLl0kYJyLarO1ODUinLyHjE4LoyK9oabTgwIwLL MEZGi61qhcARUZ35QBcUCWTDxS8nc+k= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1773866739; a=rsa-sha256; cv=none; b=n3a5ySNJk1g4svia9fs/7lSIu9lL8G3Q6VCjYez0U9gdeufY/Oxv0q8GKml2/Rxwq9ugls bpG/yHXhLFWj11JXDOIZxnICeS2b2uwnZJWFWdBnT/jjwfocGqo4THw1FN4KvrTMPbVnuP xmZfivpEnw8lna/MVGvOUxeeHgzxZ3w= ARC-Authentication-Results: i=1; imf09.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b="tU3bf1/p"; spf=pass (imf09.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 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 81ED360121; Wed, 18 Mar 2026 20:45:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 60453C19421; Wed, 18 Mar 2026 20:45:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773866738; bh=zhiEEPWHi0Q+RZZJHd9qlTQu0wk2AvPhIX6cgiIHqVE=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=tU3bf1/pUIwb22ed55FxfamtkcBn4KbUxGHRym1zix0QxI1yshxGBzV0KRRXZLY92 w/oBUkyIBXuIYXLThHFfu8wccS0YSI38SiQWbjCtfrZMungJSI8peNCTFdiaZ9oKgn UIk6hfVMSu2g0GqVwjcgrRV+wsxepsZk/VWGLfnjhWol0saJXWg9MgLZKc+XiaWap5 tH13N/3lAuEUyVgarlGGFn8o/Lb0Qkw9J5IWLC5xpD3sDN+RA3drdSkfq6OCvazWEF 4Blzopwf5m8/FnJjDfrCE7BogXqTBOwMVY04snvjBCUoVhzzYE0Gl62Ht1IePHOZHe GyZMZfKR25/+w== Message-ID: <5ce0932d-e8d7-4f0b-acb2-12be43a035e1@kernel.org> Date: Wed, 18 Mar 2026 21:45:31 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/8] mm/huge_memory: simplify vma_is_specal_huge() To: "Lorenzo Stoakes (Oracle)" , Andrew Morton Cc: Zi Yan , Baolin Wang , "Liam R . Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <84712e37721c557f887e4a405759be31a4961100.1773865827.git.ljs@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: <84712e37721c557f887e4a405759be31a4961100.1773865827.git.ljs@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 307A6140018 X-Stat-Signature: eux5j87udgdrp3x3dx1sjjmamomur6ir X-HE-Tag: 1773866739-988616 X-HE-Meta: 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 vR6xiYqm 0TOPGig+bLkw8Kz7kvxWOgx6nVdTERScmfQNJQGw0/BEDPCG2lf28VemwvPD5s32xhIcK/a3tNJfd1avBhDe7qCFWH0N3MHXgnQMI8M1p1PmYREzM+fg5Ozz2BpnScEf2+7XTj6b5dcXj5io/E59Q1pFkr2fKpb2YtnQa8AJ+tyUir/A2x+7fmkP+cY0qYTgYabsKZ6mYmVovI1gfuffm3ep9oTRE7LC4rMDtsxJ2wucJ6Ryono0Bwc2jlo/S87NBXatUKgVjQ7vjL8cY/hTsEZVnRmstpLaCw996f6pOMjICjGiALApgKVSnYwD7QfYFsZ+hhqtNgNK/99M= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > +++ b/mm/huge_memory.c > @@ -100,6 +100,14 @@ static inline bool file_thp_enabled(struct vm_area_struct *vma) > return !inode_is_open_for_write(inode) && S_ISREG(inode->i_mode); > } > > +/* If returns true, we are unable to access the VMA's folios. */ > +static bool vma_is_special_huge(struct vm_area_struct *vma) > +{ > + if (vma_is_dax(vma)) > + return false; > + return vma_test_any(vma, VMA_PFNMAP_BIT, VMA_MIXEDMAP_BIT); > +} I was hoping that we could make this whole code look more like PTE code by using vm_normal_page_pmd() ... :) -- Cheers, David