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[2003:d8:2f1f:3f00:731a:f5e5:774e:d40c]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-45b6f0d32a2sm290899325e9.9.2025.09.02.01.12.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 02 Sep 2025 01:12:07 -0700 (PDT) Message-ID: Date: Tue, 2 Sep 2025 10:12:05 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 00/12] mm: establish const-correctness for pointer parameters To: Lorenzo Stoakes , Max Kellermann Cc: 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, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, vishal.moola@gmail.com, linux@armlinux.org.uk, James.Bottomley@hansenpartnership.com, deller@gmx.de, agordeev@linux.ibm.com, gerald.schaefer@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, davem@davemloft.net, andreas@gaisler.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, chris@zankel.net, jcmvbkbc@gmail.com, viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz, weixugc@google.com, baolin.wang@linux.alibaba.com, rientjes@google.com, shakeel.butt@linux.dev, thuth@redhat.com, broonie@kernel.org, osalvador@suse.de, jfalempe@redhat.com, mpe@ellerman.id.au, nysal@linux.ibm.com, linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-fsdevel@vger.kernel.org References: <20250901205021.3573313-1-max.kellermann@ionos.com> <76ec40af-d234-400a-af0f-faeb001c9182@lucifer.local> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: DBC968000F X-Stat-Signature: emwi6bbr85h4zej1gpfrx714q1xjjhuw X-Rspam-User: X-HE-Tag: 1756800731-597492 X-HE-Meta: U2FsdGVkX1/LvZlmpNHI8pay4hCHH/z2cN0TZFkSlfs1N4ByBAZ9DyIECDhttI/nmKOrgWKupCrLbyPSNA9vpqSlySU/8m6Y8+csXwNtnbW/pUwA8ciLJUHcira3kRzDTzpiB21CvCH+XBjnOJRlnLMPF7xfUzhmHz9+NgFmn6qlV+8FDWQeqhNTyAmehVQ697KoZHDtwe9M+ahOCX74R2CAIdQGND//yc1TnfGzXydZuKPTE5L1bdmaAGL/RoN9Yb1Qj7VXy3/97zc3zzJ/DqbWB/mOg4LvMbo3YG4SclOvyG94Pb/bxgfkJuJDdUbwLlCDBAzYZtH+CZ7+UqqK47X9mVeaF8/I0AenyNI8usd4jzgi4EreFWg3IXnkC+hNsIUcff0t+lMiOU+AKLZ4Q91wdNVTKEoMRrb7a+4d91RLe12jUZsFGnkvpD2nIKUBWBy8ugE/MXuBnkjrqOW3KdcVo6DPtrQpkTZwSd73CpJdWuT99/+kQTsjSfu5ATwwcANTlowm1q0iOxc8NZ2Aa74dQFtm3I6HHclGS7aSeuH9YzSqCMx6fp9Y/ZrEjCUDtdyn0oK7DA8oRB9VURikZTMdd1YQH2nZ7fumonTiT8HKQ0eMvIv+1qNrhfskBZQUTE9P2FffBG14i60qB/8wlYN4/tjXz3BHDrNwiflNLY24c6rPnM8v/a0YnRoMFMYtK9Faxb8w/m8BTS7bMlkjKEhkvOWq2pUCZPLIMpe40xP7v9I37IYZSJpdKpdqImRloeqSGKIkWpt47GBlK4I0AC27NZhodN0/TTKcZ0g3/Z44RhvCbKk7yskUQwdSlAjpOduqvZ56epET816ABwNJKD9r449jab/xn0ioM+ai/D1GUCVSQcckznscJW0ZjcF8ocSwQAjsJISF/rlChe7CsEc4vy4Sc5BYtJN4Nid/983iGFooVLepPb9aH5ou29VRlijm0Gfm6zcBt9lYTVJ DSR2DYOd 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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 02.09.25 08:19, Lorenzo Stoakes wrote: > On Mon, Sep 01, 2025 at 10:50:09PM +0200, Max Kellermann wrote: >> For improved const-correctness in the low-level memory-management >> subsystem, which provides a basis for further const-ification further >> up the call stack (e.g. filesystems). > > Great, this succinctly expresses what you want! > >> >> This patch series splitted into smaller patches was initially posted >> as a single large patch: >> >> https://lore.kernel.org/lkml/20250827192233.447920-1-max.kellermann@ionos.com/ >> >> I started this work when I tried to constify the Ceph filesystem code, >> but found that to be impossible because many "mm" functions accept >> non-const pointer, even though they modify nothing. > > And as Vlasta said, this is great context. Yes, that's valuable information, and the series is looking lovely now. -- Cheers David / dhildenb