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Message-ID: <20250901061223.2939097-4-max.kellermann@ionos.com>
Date: Mon, 1 Sep 2025 08:12:14 +0200
From: Max Kellermann <max.kellermann@...os.com>
To: akpm@...ux-foundation.org,
david@...hat.com,
axelrasmussen@...gle.com,
yuanchu@...gle.com,
willy@...radead.org,
hughd@...gle.com,
mhocko@...e.com,
linux-kernel@...r.kernel.org,
linux-mm@...ck.org,
lorenzo.stoakes@...cle.com,
Liam.Howlett@...cle.com,
vbabka@...e.cz,
rppt@...nel.org,
surenb@...gle.com,
vishal.moola@...il.com
Cc: Max Kellermann <max.kellermann@...os.com>
Subject: [PATCH v3 03/12] mm/mmzone: add `const` to lots of pointer parameters
For improved const-correctness.
Signed-off-by: Max Kellermann <max.kellermann@...os.com>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@...il.com>
---
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
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