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[2003:d8:2f37:2b00:948c:dd9f:29c8:73f4]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3d12c90a01bsm12227157f8f.31.2025.09.01.03.40.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 01 Sep 2025 03:40:04 -0700 (PDT) Message-ID: <2325a092-c810-4ae2-bf71-0a2c6fe361eb@redhat.com> Date: Mon, 1 Sep 2025 12:40:02 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 01/12] mm/shmem: add `const` to lots of pointer parameters To: Max Kellermann Cc: Kiryl Shutsemau , akpm@linux-foundation.org, axelrasmussen@google.com, yuanchu@google.com, willy@infradead.org, hughd@google.com, mhocko@suse.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, vishal.moola@gmail.com References: <20250831093918.2815332-1-max.kellermann@ionos.com> <20250831093918.2815332-2-max.kellermann@ionos.com> <244b73d5-39dc-4bcc-a69c-8ae3010b40d9@redhat.com> <661e6140-572b-4480-9ca2-6a127730f32b@redhat.com> <25f468d2-8474-4d27-9013-d4cac7675897@redhat.com> <5636a473-2a0a-4d25-95a4-1db48a1752ec@redhat.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam03 X-Rspam-User: X-Rspamd-Queue-Id: 98970C000A X-Stat-Signature: 4168fm1amtpoiodpaapyasbjpkajskwu X-HE-Tag: 1756723209-790735 X-HE-Meta: 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 0IpUPzDr 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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 01.09.25 12:36, Max Kellermann wrote: > On Mon, Sep 1, 2025 at 12:07 PM David Hildenbrand wrote: >> >> On 01.09.25 12:00, Max Kellermann wrote: >>> On Mon, Sep 1, 2025 at 11:53 AM David Hildenbrand wrote: >>>> I'm sorry, I have no time to argue about the basics of writing a patch >>>> description. I even proposed a simple example of what we (multiple >>>> reviewers) would expect as a bare minimum. >>> >>> But Lorenzo Stoakes and Mike Rappoport wanted much more than that. >> >> Sure, if it's not a simple "test" function as the one I commented on, it >> might make sense to explain more why it is okay. > > Lorenzo and Mike commented on the very same patch as you (i.e. 01/12). > > I remember that you provided an example, and implementing that would > have been easy - but it would not have been enough. It would have been :) See, Willy's patch made it clear that these are "test" functions. I incorporated that in my suggestion by using the term "test function". For a "test" function (or a getter), it's trivial to see why we would want to have it const. For other functions it's less clear, and might contradict to some plans we have (e.g., currently does not modify it but might in the future). -- Cheers David / dhildenb