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[2003:dc:6f1d:f00:230:64ff:fe74:809]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-afefcbd9090sm937339066b.69.2025.09.01.13.50.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Sep 2025 13:50:33 -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, 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, max.kellermann@ionos.com, 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 Subject: [PATCH v6 03/12] mm: constify zone related test/getter functions Date: Mon, 1 Sep 2025 22:50:12 +0200 Message-ID: <20250901205021.3573313-4-max.kellermann@ionos.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250901205021.3573313-1-max.kellermann@ionos.com> References: <20250901205021.3573313-1-max.kellermann@ionos.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: E11178000E X-Stat-Signature: sdqycfzmrfom47ytaogbqec45bopptob X-Rspam-User: X-HE-Tag: 1756759834-186302 X-HE-Meta: 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 DW7xZlB2 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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: For improved const-correctness. We select certain 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 Reviewed-by: Vishal Moola (Oracle) Reviewed-by: Lorenzo Stoakes Acked-by: David Hildenbrand --- 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..6c4eae96160d 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 *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 *zone) { return zone->initialized; } -static inline bool zone_is_empty(struct zone *zone) +static inline bool zone_is_empty(const struct zone *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 *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 *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 *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 *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 *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 *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 *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 *zoneref) { return zoneref->zone_idx; } -static inline int zonelist_node_idx(struct zoneref *zoneref) +static inline int zonelist_node_idx(const struct zoneref *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 *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 *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 *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 *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 *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 *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 *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 *section) { return 0; } -- 2.47.2