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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 530E9C5AD49 for ; Tue, 3 Jun 2025 22:03:01 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B4DA86B0525; Tue, 3 Jun 2025 18:03:00 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B24E06B0526; Tue, 3 Jun 2025 18:03:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A14EE6B0527; Tue, 3 Jun 2025 18:03:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 822486B0525 for ; Tue, 3 Jun 2025 18:03:00 -0400 (EDT) Received: from smtpin15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 01F0410014D for ; Tue, 3 Jun 2025 22:02:59 +0000 (UTC) X-FDA: 83515465320.15.1318D19 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by imf07.hostedemail.com (Postfix) with ESMTP id 673004000A for ; Tue, 3 Jun 2025 22:02:57 +0000 (UTC) Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b="H/xtzrQA"; spf=pass (imf07.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=quarantine) header.from=redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1748988177; 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=eS7f7quUUty4CLA6etNXIneQrPITZcpqBLU3n/eJmMA=; b=eKaLkRTZVyOiTjBsTrj+QRV9e3CKNUJDBCk9ynnQMDn38qxMymgGxSbf+f+wEiBaHN+lit mCuPtVxD2kZTkRW9+yGDORLa3rmv1ObV0U11rbe/emZPfubTE8G10nkSLZfVJi3MmpP2xv hPPLZNBRZjzbJmT4RvsEnn5TKG/5eus= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1748988177; a=rsa-sha256; cv=none; b=Mv5EYPmFD98yfhJ+92vqSMSvqwu0Gn+r/SKL1rU1k5EepG8fTVsdjDIDS5MAGzUZA1QOLQ yHCjz0VaDez8y3DgkWhhhaGRpDnh3VdqZ+GLG8r1L48otXAge0CKxJ5zIapQ3oK8BTL0IB Esr4audi9enOnaWOEMYQdzImsnxoeps= ARC-Authentication-Results: i=1; imf07.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b="H/xtzrQA"; spf=pass (imf07.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=quarantine) header.from=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1748988176; h=from:from: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:autocrypt:autocrypt; bh=eS7f7quUUty4CLA6etNXIneQrPITZcpqBLU3n/eJmMA=; b=H/xtzrQAvJ8VVBevXMRSnXgP0y//rXG6a58JCTDSGyI1TdaOD9nm+mSBK8mYZS6eBf9vqy /aGoD6d38hP1K9vpxfQNNA0r+aLXvvrjnJd57WDBk2o7DYq2L9lybv7BM2KYUAsrhQ9cw6 sn6RBnXSXuTHNWyXDZN5ney/VDREIyw= Received: from mail-wr1-f72.google.com (mail-wr1-f72.google.com [209.85.221.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-505-hdihKIxJPCW7GM1ehPr5GA-1; Tue, 03 Jun 2025 18:02:55 -0400 X-MC-Unique: hdihKIxJPCW7GM1ehPr5GA-1 X-Mimecast-MFC-AGG-ID: hdihKIxJPCW7GM1ehPr5GA_1748988174 Received: by mail-wr1-f72.google.com with SMTP id ffacd0b85a97d-3a50049f8eeso1537859f8f.3 for ; Tue, 03 Jun 2025 15:02:55 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748988174; x=1749592974; h=content-transfer-encoding:in-reply-to:organization:autocrypt :content-language:from:references:cc:to:subject:user-agent :mime-version:date:message-id:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=eS7f7quUUty4CLA6etNXIneQrPITZcpqBLU3n/eJmMA=; b=ANjI1/7AkjzAxzR6+68YN0pTCcrUd1JxOwT+5TAJQfZsd0dCxKLUd8v+oe+hHlWAv6 C/S7Bem0OLJR7XaK3tB5z82mbtjxAV9cIok8bNUdwBLU0En4TTuWI0BrlGy9YO8ceoDE +2qiNqfiG4C8gUVTw+vunwx+0FpCf0bLxuENFvD0fRflFo+LtdEQ1SOSNLoT8UBi8yjm JWsg1K/UhwNmkHQajAYxGPq7668fFDcbn9ZEOe3xO9jnWmCBCVyJ/vNWnigKKuOLgJmQ k8/aLSE48WUOBKnl4EoD7p4ZK2G81XKrHGPv73BZjxcrXjtmF3k2BlHwRyUWAl8DdAG7 X8jQ== X-Gm-Message-State: AOJu0Yy1S/7NFOBlb4SUM/ZsjyDMHEYjSJBGLwA9ixsh5dvN9QJ0h7hP obaznJertKByX8IsZtL+g9DHttwmyXzcJK01zXe1bGzfwDW9qayltMb6p+mlp0sZomRj0oO8FKQ FcVIsiIPp30No95BJlNBsiKisEVJPz22dX1DhXg157IRrmT0iQ9gv X-Gm-Gg: ASbGnctDS5sKlwKT5f0kiHpNcIv+xlF2A/cjk72WvFgYBqs63gF6YpPIxIfnL0VbwGr CD6oAx+5JvfvQACEKYt4uvLEaj1zUzCL/7qwixlsJTlUL3q+fXK88UGukp6vIDe8RW/6sru3mS8 onT1IN8+D1uJpHqBgyXOPZdvJDKAWiBnigsjDaC3cx1HbO0AxnQTG0Dk7WQvI+YoBtswNf0vuNF OG7VHXko+8UTJ9nax7RjF2grOl6VGHB9QjlCAbQ+38Sx+GHLj7blXFaUAj0ECtw4TRl08wmDl+x 502SJm9rO3kOof1KX0EBRCPOOp39bOFSCNFwgHPDNz8znvP5NXsEurJIUsl5ZJQEvU5cw9nL04h MovNOSfDKSfECQXJwQGBRB/za+yv89BIslH1ZzvQ= X-Received: by 2002:a05:6000:144f:b0:3a4:f7e6:284b with SMTP id ffacd0b85a97d-3a51d8f6a52mr292311f8f.10.1748988174384; Tue, 03 Jun 2025 15:02:54 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFHKGIadPoiOp938yNpY7WW37URrLF4uvDP2tSTNNwKFPpxKIBCxv1en5PPiTu2Tlm6YnhSjg== X-Received: by 2002:a05:6000:144f:b0:3a4:f7e6:284b with SMTP id ffacd0b85a97d-3a51d8f6a52mr292280f8f.10.1748988173962; Tue, 03 Jun 2025 15:02:53 -0700 (PDT) Received: from ?IPV6:2003:d8:2f0d:f000:eec9:2b8d:4913:f32a? (p200300d82f0df000eec92b8d4913f32a.dip0.t-ipconnect.de. [2003:d8:2f0d:f000:eec9:2b8d:4913:f32a]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-450d7f8ed32sm174020795e9.1.2025.06.03.15.02.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 03 Jun 2025 15:02:53 -0700 (PDT) Message-ID: Date: Wed, 4 Jun 2025 00:02:51 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 2/2] mm/huge_memory: don't mark refcounted pages special in vmf_insert_folio_pud() To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org, Andrew Morton , Alistair Popple , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Dan Williams References: <20250603211634.2925015-1-david@redhat.com> <20250603211634.2925015-3-david@redhat.com> From: David Hildenbrand 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 ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: <20250603211634.2925015-3-david@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: eCv_MUugVvkad2w-WEQ5h3QAwhTTMY0SGmxg2pRJUls_1748988174 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 673004000A X-Stat-Signature: 41rtksttqrrgd533zuzu1yigfb5homgp X-Rspam-User: X-HE-Tag: 1748988177-995018 X-HE-Meta: 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 9fi/1vi+ nHxK1JtMulhuNBxR4iX9MnlfZfaYV1jkqThQKSe3rcy0Ga0nnhGqy2wRDirz+O6omoS1al1pNK1LGG8Y8Tidip4YJU5kk1LhKqTy+Wuv73txB07Ar6b73agwOIen/ob88f5SjKtUDa31j9US7BKKU0SYOXJX7zYNfAN7ghPtGgbrU/C8JI16bAn+fzI/ElkVKfcqCcCkdkeA/GtRa9GyE+MaVWf8K3Bs/FI6R8p04ByFyp0IRrAcyXVGITAycrurOI+FbD6eXoFX4uaBUFWh1DF8wQqHScjTm+5O6dooFVlEBtYz3elv8ruHYXI4le+kccJV5LyRj5T8+2/i03M1eJkNthAEK5n4S2A3SDuQk5HKSUlzF0UvpZ+BpqhWgmrXQvjKyUq5XK/tnJNzTnvUwezjR/OP6V+9gwO7UEcIppT8DW/6Syh6VpGjb8bkh65WkUXtQyZcUtWlHYIoQB37Jne0zBSc0Rs9bROe4 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 03.06.25 23:16, David Hildenbrand wrote: > Marking PUDs that map a "normal" refcounted folios as special is > against our rules documented for vm_normal_page(). > > Fortunately, there are not that many pud_special() check that can be > mislead and are right now rather harmless: e.g., none so far > bases decisions whether to grab a folio reference on that decision. > > Well, and GUP-fast will fallback to GUP-slow. All in all, so far no big > implications as it seems. > > Getting this right will get more important as we introduce > folio_normal_page_pud() and start using it in more place where we > currently special-case based on other VMA flags. > > Fix it by just inlining the relevant code, making the whole > pud_none() handling cleaner. > > Add folio_mk_pud() to mimic what we do with folio_mk_pmd(). > > While at it, make sure that the pud that is non-none is actually present > before comparing PFNs. > > Fixes: dbe54153296d ("mm/huge_memory: add vmf_insert_folio_pud()") > Signed-off-by: David Hildenbrand > --- > include/linux/mm.h | 15 +++++++++++++++ > mm/huge_memory.c | 33 +++++++++++++++++++++++---------- > 2 files changed, 38 insertions(+), 10 deletions(-) > > diff --git a/include/linux/mm.h b/include/linux/mm.h > index 0ef2ba0c667af..047c8261d4002 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1816,6 +1816,21 @@ static inline pmd_t folio_mk_pmd(struct folio *folio, pgprot_t pgprot) > { > return pmd_mkhuge(pfn_pmd(folio_pfn(folio), pgprot)); > } > + > +/** > + * folio_mk_pud - Create a PUD for this folio > + * @folio: The folio to create a PUD for > + * @pgprot: The page protection bits to use > + * > + * Create a page table entry for the first page of this folio. > + * This is suitable for passing to set_pud_at(). > + * > + * Return: A page table entry suitable for mapping this folio. > + */ > +static inline pud_t folio_mk_pud(struct folio *folio, pgprot_t pgprot) > +{ > + return pud_mkhuge(pfn_pud(folio_pfn(folio), pgprot)); > +} > #endif > #endif /* CONFIG_MMU */ The following on top should make cross-compiles happy (git diff output because it's late here, probably whitespace messed up): diff --git a/include/linux/mm.h b/include/linux/mm.h index 047c8261d4002..b7e2abd8ce0df 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1817,6 +1817,7 @@ static inline pmd_t folio_mk_pmd(struct folio *folio, pgprot_t pgprot) return pmd_mkhuge(pfn_pmd(folio_pfn(folio), pgprot)); } +#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD /** * folio_mk_pud - Create a PUD for this folio * @folio: The folio to create a PUD for @@ -1831,7 +1832,8 @@ static inline pud_t folio_mk_pud(struct folio *folio, pgprot_t pgprot) { return pud_mkhuge(pfn_pud(folio_pfn(folio), pgprot)); } -#endif +#endif /* CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */ +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif /* CONFIG_MMU */ static inline bool folio_has_pincount(const struct folio *folio -- Cheers, David / dhildenb