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[2003:d8:2f37:2b00:948c:dd9f:29c8:73f4]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3d92d51982bsm519348f8f.21.2025.09.01.07.06.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 01 Sep 2025 07:07:01 -0700 (PDT) Message-ID: <081a7335-ec84-4e26-9ea2-251e3fc42277@redhat.com> Date: Mon, 1 Sep 2025 16:06:57 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 11/12] mm: constify assert/test functions in mm.h To: Max Kellermann , 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, 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: <20250901123028.3383461-1-max.kellermann@ionos.com> <20250901123028.3383461-12-max.kellermann@ionos.com> From: David Hildenbrand Content-Language: en-US Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 01.09.25 14:30, Max Kellermann wrote: > For improved const-correctness. > > We select certain assert and test functions which either invoke each > other, functions that are already const-ified, or no further > functions. > > It is therefore relatively trivial to const-ify them, which > provides a basis for further const-ification further up the call > stack. > > Signed-off-by: Max Kellermann > --- > include/linux/mm.h | 40 ++++++++++++++++++++-------------------- > 1 file changed, 20 insertions(+), 20 deletions(-) > > diff --git a/include/linux/mm.h b/include/linux/mm.h > index 23864c3519d6..4cca66ba8839 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -703,7 +703,7 @@ static inline void release_fault_lock(struct vm_fault *vmf) > mmap_read_unlock(vmf->vma->vm_mm); > } > > -static inline void assert_fault_locked(struct vm_fault *vmf) > +static inline void assert_fault_locked(struct vm_fault *const vmf) > { > if (vmf->flags & FAULT_FLAG_VMA_LOCK) > vma_assert_locked(vmf->vma); > @@ -716,7 +716,7 @@ static inline void release_fault_lock(struct vm_fault *vmf) > mmap_read_unlock(vmf->vma->vm_mm); > } > > -static inline void assert_fault_locked(struct vm_fault *vmf) > +static inline void assert_fault_locked(const struct vm_fault *vmf) > { This confused me a bit: in the upper variant it's "*const" and here it's "const *". There are multiple such cases here, which might imply that it is not "relatively trivial to const-ify them". :) Did you miss to convert some of these cases properly, or is there a reason for this inconsistency? -- Cheers David / dhildenb