mm: mass constification of folio/page pointers

Now that page_pgoff() takes const pointers, we can constify the pointers
to a lot of functions.

Link: https://lkml.kernel.org/r/20241005200121.3231142-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/include/linux/ksm.h b/include/linux/ksm.h
index 29022e71a074..6a53ac4885bb 100644
--- a/include/linux/ksm.h
+++ b/include/linux/ksm.h
@@ -90,7 +90,7 @@ struct folio *ksm_might_need_to_copy(struct folio *folio,
 
 void rmap_walk_ksm(struct folio *folio, struct rmap_walk_control *rwc);
 void folio_migrate_ksm(struct folio *newfolio, struct folio *folio);
-void collect_procs_ksm(struct folio *folio, struct page *page,
+void collect_procs_ksm(const struct folio *folio, const struct page *page,
 		struct list_head *to_kill, int force_early);
 long ksm_process_profit(struct mm_struct *);
 
@@ -122,8 +122,9 @@ static inline void ksm_might_unmap_zero_page(struct mm_struct *mm, pte_t pte)
 {
 }
 
-static inline void collect_procs_ksm(struct folio *folio, struct page *page,
-				     struct list_head *to_kill, int force_early)
+static inline void collect_procs_ksm(const struct folio *folio,
+		const struct page *page, struct list_head *to_kill,
+		int force_early)
 {
 }