diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-03-26 17:10:28 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-04-25 20:56:14 -0700 |
| commit | b84fd2835c70e0149e2522fd746d3fb7049a1e19 (patch) | |
| tree | c871a7024d1cea7c88edfbc994bd691d1e6646d5 /mm | |
| parent | 2ace5a670e2a0f3a6029bc6cf91dc14202074e7a (diff) | |
mm: make page_mapped() take a const argument
None of the functions called by page_mapped() modify the page or folio, so
mark them all as const.
Link: https://lkml.kernel.org/r/20240326171045.410737-7-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/internal.h | 7 | ||||
| -rw-r--r-- | mm/rmap.c | 2 |
2 files changed, 5 insertions, 4 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; diff --git a/mm/rmap.c b/mm/rmap.c index 3746a5531018..d52759aa3ff7 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1134,7 +1134,7 @@ int pfn_mkclean_range(unsigned long pfn, unsigned long nr_pages, pgoff_t pgoff, return page_vma_mkclean_one(&pvmw); } -int folio_total_mapcount(struct folio *folio) +int folio_total_mapcount(const struct folio *folio) { int mapcount = folio_entire_mapcount(folio); int nr_pages; |