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-rw-r--r--mm/internal.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/mm/internal.h b/mm/internal.h
index 5dbfa1c12e89..8e11f7b2da21 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -71,7 +71,7 @@ void page_writeback_init(void);
* How many individual pages have an elevated _mapcount. Excludes
* the folio's entire_mapcount.
*/
-static inline int folio_nr_pages_mapped(struct folio *folio)
+static inline int folio_nr_pages_mapped(const struct folio *folio)
{
return atomic_read(&folio->_nr_pages_mapped) & FOLIO_PAGES_MAPPED;
}
@@ -81,7 +81,8 @@ static inline int folio_nr_pages_mapped(struct folio *folio)
* folio. We cannot rely on folio->swap as there is no guarantee that it has
* been initialized. Used for calling arch_swap_restore()
*/
-static inline swp_entry_t folio_swap(swp_entry_t entry, struct folio *folio)
+static inline swp_entry_t folio_swap(swp_entry_t entry,
+ const struct folio *folio)
{
swp_entry_t swap = {
.val = ALIGN_DOWN(entry.val, folio_nr_pages(folio)),
@@ -90,7 +91,7 @@ static inline swp_entry_t folio_swap(swp_entry_t entry, struct folio *folio)
return swap;
}
-static inline void *folio_raw_mapping(struct folio *folio)
+static inline void *folio_raw_mapping(const struct folio *folio)
{
unsigned long mapping = (unsigned long)folio->mapping;