[PATCH v1 13/18] mm/filemap: use folio_mapcount() in filemap_unaccount_folio()

David Hildenbrand
2024-04-09T19:26:18Z

We want to limit the use of page_mapcount() to the places where it is
absolutely necessary.

Let's use folio_mapcount() instead of filemap_unaccount_folio().

No functional change intended, because we're only dealing with small
folios.

Signed-off-by: David Hildenbrand <david@redhat.com>
---
mm/filemap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index c668e11cd6ef..d4aa82ad5b59 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -168,7 +168,7 @@ static void filemap_unaccount_folio(struct address_space *mapping,
add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);

if (mapping_exiting(mapping) && !folio_test_large(folio)) {
- int mapcount = page_mapcount(&folio->page);
+ int mapcount = folio_mapcount(folio);

if (folio_ref_count(folio) >= mapcount + 2) {
/*
--
2.44.0