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[2003:cb:c71b:7e00:9339:4017:7111:82d0]) by smtp.gmail.com with ESMTPSA id fa23-20020a05600c519700b004147ec48845sm449220wmb.26.2024.03.22.08.10.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 22 Mar 2024 08:10:46 -0700 (PDT) Message-ID: <2c537d5a-00d5-432a-a217-1767d0fe6802@redhat.com> Date: Fri, 22 Mar 2024 16:10:46 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 8/9] mm: Improve dumping of mapcount and page_type To: "Matthew Wilcox (Oracle)" , Andrew Morton Cc: linux-mm@kvack.org, Vlastimil Babka , Miaohe Lin , Muchun Song , Oscar Salvador References: <20240321142448.1645400-1-willy@infradead.org> <20240321142448.1645400-9-willy@infradead.org> 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: <20240321142448.1645400-9-willy@infradead.org> 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-Rspamd-Queue-Id: 640D614000E X-Rspam-User: X-Stat-Signature: pmis8opwga7bepz7ge61ro5a8kusair4 X-Rspamd-Server: rspam03 X-HE-Tag: 1711120251-925123 X-HE-Meta: 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 vSYub1kr 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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 21.03.24 15:24, Matthew Wilcox (Oracle) wrote: > For pages that have a page_type, set the mapcount to 0, which will > reduce the confusion in people reading page dumps ("Why does this page > have a mapcount of -128?"). Now that hugetlbfs is a page_type, read the > entire_mapcount for any large folio; this is fine for all folios as no > user reuses the entire_mapcount field. > > For pages which do not have a page type, do not print it to reduce > clutter. > > Signed-off-by: Matthew Wilcox (Oracle) > --- Reviewed-by: David Hildenbrand -- Cheers, David / dhildenb