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[2003:dc:6f1d:f00:230:64ff:fe74:809]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-61cfc231561sm6374533a12.23.2025.08.31.23.12.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 31 Aug 2025 23:12:35 -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 03/12] mm/mmzone: add `const` to lots of pointer parameters Date: Mon, 1 Sep 2025 08:12:14 +0200 Message-ID: <20250901061223.2939097-4-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-Rspamd-Queue-Id: B9BFD140008 X-Rspamd-Server: rspam04 X-Rspam-User: X-Stat-Signature: 7suxexk9b19g5ubcyyhf9oq3i69o6osw X-HE-Tag: 1756707156-985963 X-HE-Meta: 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 d8Lw5t2K HEj1Mm/z8RsKYiK4irhDF3l36tkvmkdUN8DrNsyY9EkQbhf4r6pWPAnQXC1DQVJ74jVMPMrf2zbylX0ZdWLdPA8/XrDr2hWOEOk1YyojMD1sB2NsEEMXS3KobclAxhtBkhUPbUXMeGeHADPpGIMKs0k+a+Mo8eQdR3ddJaVuwqAGD5ysK5kb7jaBG2ocJH5BBbXVlbE6FUaFtjUec2JOjQX6I27MZLPxHHfNiZKRPnCgl1i51uFvdtM/BPg0/JyTumkf/sHSAoDDPbBADYt7qK2t9hMoxx03waKspKT6S88LdVr5M2UUsp0u4jBqAZTEGgEHmektyLF9Kaxcq8AiROTb3reaVzkOx2fLiXjqeegGzQT5N4poz62nyCG8t+zse275yZasNuqImScEHRf1J2a9ptC075sGae7FC0eL2NfKTsM0TYCCE63A0nij0T07Jw1tXXuvWszEF0JvD2hVYmy+6xQ== 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/mmzone.h | 42 +++++++++++++++++++++--------------------- 1 file changed, 21 insertions(+), 21 deletions(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index f3272ef5131b..9a25fb1ade82 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -1104,7 +1104,7 @@ static inline unsigned long promo_wmark_pages(const struct zone *z) return wmark_pages(z, WMARK_PROMO); } -static inline unsigned long zone_managed_pages(struct zone *zone) +static inline unsigned long zone_managed_pages(const struct zone *const zone) { return (unsigned long)atomic_long_read(&zone->managed_pages); } @@ -1128,12 +1128,12 @@ static inline bool zone_spans_pfn(const struct zone *zone, unsigned long pfn) return zone->zone_start_pfn <= pfn && pfn < zone_end_pfn(zone); } -static inline bool zone_is_initialized(struct zone *zone) +static inline bool zone_is_initialized(const struct zone *const zone) { return zone->initialized; } -static inline bool zone_is_empty(struct zone *zone) +static inline bool zone_is_empty(const struct zone *const zone) { return zone->spanned_pages == 0; } @@ -1273,7 +1273,7 @@ static inline bool folio_is_zone_movable(const struct folio *folio) * Return true if [start_pfn, start_pfn + nr_pages) range has a non-empty * intersection with the given zone */ -static inline bool zone_intersects(struct zone *zone, +static inline bool zone_intersects(const struct zone *const zone, unsigned long start_pfn, unsigned long nr_pages) { if (zone_is_empty(zone)) @@ -1581,12 +1581,12 @@ static inline int local_memory_node(int node_id) { return node_id; }; #define zone_idx(zone) ((zone) - (zone)->zone_pgdat->node_zones) #ifdef CONFIG_ZONE_DEVICE -static inline bool zone_is_zone_device(struct zone *zone) +static inline bool zone_is_zone_device(const struct zone *const zone) { return zone_idx(zone) == ZONE_DEVICE; } #else -static inline bool zone_is_zone_device(struct zone *zone) +static inline bool zone_is_zone_device(const struct zone *const zone) { return false; } @@ -1598,19 +1598,19 @@ static inline bool zone_is_zone_device(struct zone *zone) * populated_zone(). If the whole zone is reserved then we can easily * end up with populated_zone() && !managed_zone(). */ -static inline bool managed_zone(struct zone *zone) +static inline bool managed_zone(const struct zone *const zone) { return zone_managed_pages(zone); } /* Returns true if a zone has memory */ -static inline bool populated_zone(struct zone *zone) +static inline bool populated_zone(const struct zone *const zone) { return zone->present_pages; } #ifdef CONFIG_NUMA -static inline int zone_to_nid(struct zone *zone) +static inline int zone_to_nid(const struct zone *const zone) { return zone->node; } @@ -1620,7 +1620,7 @@ static inline void zone_set_nid(struct zone *zone, int nid) zone->node = nid; } #else -static inline int zone_to_nid(struct zone *zone) +static inline int zone_to_nid(const struct zone *zone) { return 0; } @@ -1647,7 +1647,7 @@ static inline int is_highmem_idx(enum zone_type idx) * @zone: pointer to struct zone variable * Return: 1 for a highmem zone, 0 otherwise */ -static inline int is_highmem(struct zone *zone) +static inline int is_highmem(const struct zone *const zone) { return is_highmem_idx(zone_idx(zone)); } @@ -1713,12 +1713,12 @@ static inline struct zone *zonelist_zone(struct zoneref *zoneref) return zoneref->zone; } -static inline int zonelist_zone_idx(struct zoneref *zoneref) +static inline int zonelist_zone_idx(const struct zoneref *const zoneref) { return zoneref->zone_idx; } -static inline int zonelist_node_idx(struct zoneref *zoneref) +static inline int zonelist_node_idx(const struct zoneref *const zoneref) { return zone_to_nid(zoneref->zone); } @@ -2021,7 +2021,7 @@ static inline struct page *__section_mem_map_addr(struct mem_section *section) return (struct page *)map; } -static inline int present_section(struct mem_section *section) +static inline int present_section(const struct mem_section *const section) { return (section && (section->section_mem_map & SECTION_MARKED_PRESENT)); } @@ -2031,12 +2031,12 @@ static inline int present_section_nr(unsigned long nr) return present_section(__nr_to_section(nr)); } -static inline int valid_section(struct mem_section *section) +static inline int valid_section(const struct mem_section *const section) { return (section && (section->section_mem_map & SECTION_HAS_MEM_MAP)); } -static inline int early_section(struct mem_section *section) +static inline int early_section(const struct mem_section *const section) { return (section && (section->section_mem_map & SECTION_IS_EARLY)); } @@ -2046,27 +2046,27 @@ static inline int valid_section_nr(unsigned long nr) return valid_section(__nr_to_section(nr)); } -static inline int online_section(struct mem_section *section) +static inline int online_section(const struct mem_section *const section) { return (section && (section->section_mem_map & SECTION_IS_ONLINE)); } #ifdef CONFIG_ZONE_DEVICE -static inline int online_device_section(struct mem_section *section) +static inline int online_device_section(const struct mem_section *const section) { unsigned long flags = SECTION_IS_ONLINE | SECTION_TAINT_ZONE_DEVICE; return section && ((section->section_mem_map & flags) == flags); } #else -static inline int online_device_section(struct mem_section *section) +static inline int online_device_section(const struct mem_section *const section) { return 0; } #endif #ifdef CONFIG_SPARSEMEM_VMEMMAP_PREINIT -static inline int preinited_vmemmap_section(struct mem_section *section) +static inline int preinited_vmemmap_section(const struct mem_section *const section) { return (section && (section->section_mem_map & SECTION_IS_VMEMMAP_PREINIT)); @@ -2076,7 +2076,7 @@ void sparse_vmemmap_init_nid_early(int nid); void sparse_vmemmap_init_nid_late(int nid); #else -static inline int preinited_vmemmap_section(struct mem_section *section) +static inline int preinited_vmemmap_section(const struct mem_section *const section) { return 0; } -- 2.47.2