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[2003:cb:c70b:500:6a06:17fc:810b:b054]) by smtp.gmail.com with ESMTPSA id e18-20020adffc52000000b0032da35baf7bsm3839623wrs.113.2023.10.19.00.56.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 19 Oct 2023 00:56:59 -0700 (PDT) Message-ID: <2a3bd858-5464-4569-be1e-2a1867d90c15@redhat.com> Date: Thu, 19 Oct 2023 09:56:58 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 0/2] handle memoryless nodes more appropriately To: Qi Zheng , akpm@linux-foundation.org, rppt@kernel.org, vbabka@suse.cz, mhocko@suse.com Cc: willy@infradead.org, mgorman@techsingularity.net, mingo@kernel.org, aneesh.kumar@linux.ibm.com, ying.huang@intel.com, hannes@cmpxchg.org, osalvador@suse.de, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: 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-Rspamd-Queue-Id: B10E040015 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: wtx8wxnu7oddsiou1ki6d4m9tb8ed7h7 X-HE-Tag: 1697702224-797592 X-HE-Meta: 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 Tbhl9eKO aZlM7RXNFrxfLTSC3D7LIKfoel+W8C3/l/5B8rOUwD3VOttTrniAlz0wGiqAnmoyJezFd5W93xp5u/aM6jnZ6I/qaQVQFoddfShQSZDzlmcoKtEZaHyJX9XlOacZrButpGvLatQO+wnLCxAT7ayl6jz4roCXBk2dE4BUhScL+dVHqeLxPlcM+9Bvs0L3mkHzMTmz9hcWERXk1x50P0SS9w89s7kH5Y9L6BAqd5/LkSw1TaJFgmxXG+o+nZ9xWDZmfEombWIEeN3w1tbvnayb6fZuoGnflE9Cp5wFslI6odSBGrmgshFlJPQT74M/nmWa6rsli+nxZquZta0TCEdYjRDJcmpkIexCkEuekXMvqBkLujq+gBvCeK0cOee+viZqFcoYuIqnqvYbcGuMQ4uyVfnfKNobMwd+8ZEzChQJjo4KIMcI= 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: On 19.10.23 09:36, Qi Zheng wrote: > Hi all, > > Currently, in the process of initialization or offline memory, memoryless > nodes will still be built into the fallback list of itself or other nodes. > > This is not what we expected, so this patch series removes memoryless > nodes from the fallback list entirely. What's the end result of this change -- IOW why do we care? Patch #1 mentions "which will reduce runtime overhead." and patch #2 mentions "This will incur some runtime overhead.". IIUC the comment in patch #1 correctly, these changes don't fix anything, correct? Did you look into showing a performance gain? -- Cheers, David / dhildenb