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[2003:dc:6f1d:f00:230:64ff:fe74:809]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-61cfc231561sm6374533a12.23.2025.08.31.23.12.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 31 Aug 2025 23:12:32 -0700 (PDT) From: Max Kellermann To: akpm@linux-foundation.org, david@redhat.com, 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 Cc: Max Kellermann Subject: [PATCH v3 01/12] mm/shmem: add `const` to lots of pointer parameters Date: Mon, 1 Sep 2025 08:12:12 +0200 Message-ID: <20250901061223.2939097-2-max.kellermann@ionos.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250901061223.2939097-1-max.kellermann@ionos.com> References: <20250901061223.2939097-1-max.kellermann@ionos.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: nm6mmauzn7itsfd7k6j3zxth4dtxnwzo X-Rspam-User: X-Rspamd-Queue-Id: C36B140002 X-Rspamd-Server: rspam05 X-HE-Tag: 1756707154-13296 X-HE-Meta: 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 G9XoM1QL eOUOieiqijFcFyTla3ifEaC/SrjGAECebPTB9JWlrAfCYVvwgSjHAGMgjaMZjgu6DJt+53haQ9E3mW5VW2Q6wDAo8dl3r65UlItI4dRqSm1IIVMjgbLFOIDb0pgdC4neY916/+s5fcrEDt74vn4JoxnQYRrn/6PvhGAZ2ih49shQO1VUt1+ZAFLXHsxqDkC8vjqcRofN1O/+OwiVAYSYhc2bGNTscqk5pE+tSacfShDwE1DZjeZXBrYkbgMSa95eNVHNrkG0W0cB7CV26JoI8UykoxBrhbtRiLzShLpisb6sZ0+eYjtenEkekabLyRA+bHGsMU6EYKwTCalG0cv1TKR3bdGtlSOc9HoXDVJW/MAZV9SuYP4oNjs9hrdpuuHQkZOQWodWF52PQnetVgKSDvRLuXYqJEOobte3RYPVxq0SqQX3OiR1aG5S5UPdG5XjEWe4C/Yair64KVwY= 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: For improved const-correctness. Signed-off-by: Max Kellermann Reviewed-by: Vishal Moola (Oracle) --- include/linux/mm.h | 8 ++++---- include/linux/shmem_fs.h | 4 ++-- mm/shmem.c | 6 +++--- 3 files changed, 9 insertions(+), 9 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index cd14298bb958..18deb14cb1f5 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -979,11 +979,11 @@ static inline void vma_iter_set(struct vma_iterator *vmi, unsigned long addr) * The vma_is_shmem is not inline because it is used only by slow * paths in userfault. */ -bool vma_is_shmem(struct vm_area_struct *vma); -bool vma_is_anon_shmem(struct vm_area_struct *vma); +bool vma_is_shmem(const struct vm_area_struct *vma); +bool vma_is_anon_shmem(const struct vm_area_struct *vma); #else -static inline bool vma_is_shmem(struct vm_area_struct *vma) { return false; } -static inline bool vma_is_anon_shmem(struct vm_area_struct *vma) { return false; } +static inline bool vma_is_shmem(const struct vm_area_struct *vma) { return false; } +static inline bool vma_is_anon_shmem(const struct vm_area_struct *vma) { return false; } #endif int vma_is_stack_for_current(struct vm_area_struct *vma); diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h index 6d0f9c599ff7..0e47465ef0fd 100644 --- a/include/linux/shmem_fs.h +++ b/include/linux/shmem_fs.h @@ -99,9 +99,9 @@ extern unsigned long shmem_get_unmapped_area(struct file *, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags); extern int shmem_lock(struct file *file, int lock, struct ucounts *ucounts); #ifdef CONFIG_SHMEM -bool shmem_mapping(struct address_space *mapping); +bool shmem_mapping(const struct address_space *mapping); #else -static inline bool shmem_mapping(struct address_space *mapping) +static inline bool shmem_mapping(const struct address_space *mapping) { return false; } diff --git a/mm/shmem.c b/mm/shmem.c index 640fecc42f60..d55bceaa1c80 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -275,18 +275,18 @@ static const struct vm_operations_struct shmem_vm_ops; static const struct vm_operations_struct shmem_anon_vm_ops; static struct file_system_type shmem_fs_type; -bool shmem_mapping(struct address_space *mapping) +bool shmem_mapping(const struct address_space *const mapping) { return mapping->a_ops == &shmem_aops; } EXPORT_SYMBOL_GPL(shmem_mapping); -bool vma_is_anon_shmem(struct vm_area_struct *vma) +bool vma_is_anon_shmem(const struct vm_area_struct *const vma) { return vma->vm_ops == &shmem_anon_vm_ops; } -bool vma_is_shmem(struct vm_area_struct *vma) +bool vma_is_shmem(const struct vm_area_struct *const vma) { return vma_is_anon_shmem(vma) || vma->vm_ops == &shmem_vm_ops; } -- 2.47.2