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[79.242.52.210]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-36bbd059836sm13036287f8f.88.2024.08.06.07.25.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 06 Aug 2024 07:25:34 -0700 (PDT) Message-ID: <20485870-2156-4b60-a8f7-bc3d9a2f98f9@redhat.com> Date: Tue, 6 Aug 2024 16:25:32 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v2 2/7] mm: introduce CONFIG_PT_RECLAIM To: Qi Zheng , hughd@google.com, willy@infradead.org, mgorman@suse.de, muchun.song@linux.dev, vbabka@kernel.org, akpm@linux-foundation.org, zokeefe@google.com, rientjes@google.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <7c726839e2610f1873d9fa2a7c60715796579d1a.1722861064.git.zhengqi.arch@bytedance.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: <7c726839e2610f1873d9fa2a7c60715796579d1a.1722861064.git.zhengqi.arch@bytedance.com> 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: 2CAB5C002B X-Stat-Signature: f13k6kqxf9o4ec5qeh3jeyspqp7h8yno X-Rspamd-Server: rspam09 X-Rspam-User: X-HE-Tag: 1722954337-527387 X-HE-Meta: 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 pGbJ5UCW CL4AmH2PsinZ8YC0xfwmbHHEYZZdAr/I+W2BBSg8JWLl38HOYIvwZ6FOKnkMNrPsFBC9sSsbnMcxqOtRQj3wdHg3d+nmCbugTp1CJH6pQnAiepPo65qhOwAiD9kzXg78Wwf2xAGRxyma6+aCNFbAT4Yy7MpKgJ6CRBPEHeMy/TjoFd7SCY5BenKZNF+chfktVX38jvTbvRAGxG/AyxMkIQnewmNK8sUB8bXDVFe1NHxLP4T3R18cOBKrPAY3iFd2v+3A6FGWeV5Fiq5LQmVvC2gzoS1Y+hL5OFVEKWv6ekVy46X3Wtx7BloF+xtacx8sQgrNWHVpMBQ5ybqBw/aXShXeRHyrkZh4PvT6rnnDFxkgofZE5UKPojtBaFwbkkpeqlWK2lKDPKDZ5HFZgF6HsLBkgkxbQzRnx7qCD9ml8n7j5n4KVwoFGa/7UyQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000191, 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 05.08.24 14:55, Qi Zheng wrote: > This configuration variable will be used to build the code needed > to free empty user page table pages. > > This feature is not available on all architectures yet, so > ARCH_SUPPORTS_PT_RECLAIM is needed. We can remove it once all > architectures support this feature. Please squash this into #4 -- Cheers, David / dhildenb