diff options
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 27 |
1 files changed, 1 insertions, 26 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index f4bf94ca99e3..7f864d5f52b7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1202,8 +1202,7 @@ static inline int is_vmalloc_or_module_addr(const void *x) /* * How many times the entire folio is mapped as a single unit (eg by a * PMD or PUD entry). This is probably not what you want, except for - * debugging purposes - it does not include PTE-mapped sub-pages; look - * at folio_mapcount() or page_mapcount() instead. + * debugging purposes or implementation of other core folio_*() primitives. */ static inline int folio_entire_mapcount(const struct folio *folio) { @@ -1221,30 +1220,6 @@ static inline void page_mapcount_reset(struct page *page) atomic_set(&(page)->_mapcount, -1); } -/** - * page_mapcount() - Number of times this precise page is mapped. - * @page: The page. - * - * The number of times this page is mapped. If this page is part of - * a large folio, it includes the number of times this page is mapped - * as part of that folio. - * - * Will report 0 for pages which cannot be mapped into userspace, eg - * slab, page tables and similar. - */ -static inline int page_mapcount(struct page *page) -{ - int mapcount = atomic_read(&page->_mapcount) + 1; - - /* Handle page_has_type() pages */ - if (mapcount < PAGE_MAPCOUNT_RESERVE + 1) - mapcount = 0; - if (unlikely(PageCompound(page))) - mapcount += folio_entire_mapcount(page_folio(page)); - - return mapcount; -} - static inline int folio_large_mapcount(const struct folio *folio) { VM_WARN_ON_FOLIO(!folio_test_large(folio), folio); |