return head_compound_mapcount(page) + mapcount;
}
-int total_compound_mapcount(struct page *head);
+int folio_total_mapcount(struct folio *folio);
/**
* folio_mapcount() - Calculate the number of mappings of this folio.
{
if (likely(!folio_test_large(folio)))
return atomic_read(&folio->_mapcount) + 1;
- return total_compound_mapcount(&folio->page);
+ return folio_total_mapcount(folio);
}
static inline int total_mapcount(struct page *page)
{
if (likely(!PageCompound(page)))
return atomic_read(&page->_mapcount) + 1;
- return total_compound_mapcount(compound_head(page));
+ return folio_total_mapcount(page_folio(page));
}
static inline bool folio_large_is_mapped(struct folio *folio)
* @_head_1: Points to the folio. Do not use.
* @_folio_dtor: Which destructor to use for this folio.
* @_folio_order: Do not use directly, call folio_order().
- * @_compound_mapcount: Do not use directly, call folio_entire_mapcount().
+ * @_entire_mapcount: Do not use directly, call folio_entire_mapcount().
* @_nr_pages_mapped: Do not use directly, call folio_mapcount().
* @_pincount: Do not use directly, call folio_maybe_dma_pinned().
* @_folio_nr_pages: Do not use directly, call folio_nr_pages().
unsigned long _head_1;
unsigned char _folio_dtor;
unsigned char _folio_order;
- atomic_t _compound_mapcount;
+ atomic_t _entire_mapcount;
atomic_t _nr_pages_mapped;
atomic_t _pincount;
#ifdef CONFIG_64BIT
FOLIO_MATCH(compound_head, _head_1);
FOLIO_MATCH(compound_dtor, _folio_dtor);
FOLIO_MATCH(compound_order, _folio_order);
-FOLIO_MATCH(compound_mapcount, _compound_mapcount);
+FOLIO_MATCH(compound_mapcount, _entire_mapcount);
FOLIO_MATCH(subpages_mapcount, _nr_pages_mapped);
FOLIO_MATCH(compound_pincount, _pincount);
#ifdef CONFIG_64BIT
return page_vma_mkclean_one(&pvmw);
}
-int total_compound_mapcount(struct page *head)
+int folio_total_mapcount(struct folio *folio)
{
- struct folio *folio = (struct folio *)head;
- int mapcount = head_compound_mapcount(head);
- int nr_subpages;
+ int mapcount = folio_entire_mapcount(folio);
+ int nr_pages;
int i;
- /* In the common case, avoid the loop when no subpages mapped by PTE */
+ /* In the common case, avoid the loop when no pages mapped by PTE */
if (folio_nr_pages_mapped(folio) == 0)
return mapcount;
/*
- * Add all the PTE mappings of those subpages mapped by PTE.
- * Limit the loop, knowing that only subpages_mapcount are mapped?
+ * Add all the PTE mappings of those pages mapped by PTE.
+ * Limit the loop to folio_nr_pages_mapped()?
* Perhaps: given all the raciness, that may be a good or a bad idea.
*/
- nr_subpages = thp_nr_pages(head);
- for (i = 0; i < nr_subpages; i++)
- mapcount += atomic_read(&head[i]._mapcount);
+ nr_pages = folio_nr_pages(folio);
+ for (i = 0; i < nr_pages; i++)
+ mapcount += atomic_read(&folio_page(folio, i)->_mapcount);
/* But each of those _mapcounts was based on -1 */
- mapcount += nr_subpages;
+ mapcount += nr_pages;
return mapcount;
}