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Donenfeld" Cc: Linus Torvalds , linux-kernel@vger.kernel.org, patches@lists.linux.dev, tglx@linutronix.de, linux-crypto@vger.kernel.org, linux-api@vger.kernel.org, x86@kernel.org, Greg Kroah-Hartman , Adhemerval Zanella Netto , Carlos O'Donell , Florian Weimer , Arnd Bergmann , Jann Horn , Christian Brauner , David Hildenbrand , linux-mm@kvack.org References: <98798483-dfcd-451e-94bb-57d830bf68d8@redhat.com> <54b6de32-f127-4928-9f4a-acb8653e5c81@redhat.com> <8586b19c-2e14-4164-888f-8c3b86f3f963@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: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: gidwmpq9973hobzwtwdwknibgf5x1dij X-Rspam-User: X-Rspamd-Queue-Id: 94B35140008 X-Rspamd-Server: rspam02 X-HE-Tag: 1720724186-760962 X-HE-Meta: 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 GBa6lmJv 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 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 11.07.24 20:54, Jason A. Donenfeld wrote: > On Thu, Jul 11, 2024 at 08:24:07PM +0200, David Hildenbrand wrote: >>> And PG_large_rmappable seems to only be used for hugetlb branches. >> >> It should be set for THP/large folios. > > And it's tested too, apparently. > > Okay, well, how disappointing is this below? Because I'm running out of > tricks for flag reuse. > > diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h > index b9e914e1face..c1ea49a7f198 100644 > --- a/include/linux/page-flags.h > +++ b/include/linux/page-flags.h > @@ -110,6 +110,7 @@ enum pageflags { > PG_workingset, > PG_error, > PG_owner_priv_1, /* Owner use. If pagecache, fs may use*/ > + PG_owner_priv_2, Oh no, no new page flags please :) Maybe just follow what Linux suggested: pass vma to pte_dirty() and always return false for these special VMAs. -- Cheers, David / dhildenb