This function is misleading; people think it means "Is this a THP",
when all it actually does is check whether this is a large folio.
Remove it; the one remaining user should have been checking to see
whether the folio is PMD sized or not.
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
include/linux/page-flags.h | 5 -----
mm/memcontrol.c | 2 +-
2 files changed, 1 insertion(+), 6 deletions(-)
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 5b466e619f71..e3ca17e95bbf 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -853,11 +853,6 @@ static inline int PageTransHuge(struct page *page)
return PageHead(page);
}
-static inline bool folio_test_transhuge(struct folio *folio)
-{
- return folio_test_head(folio);
-}
-
/*
* PageTransCompound returns true for both transparent huge pages
* and hugetlbfs pages, so it should only be called when it's known
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 35d7e66ab032..67bda1ceedbe 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5765,7 +5765,7 @@ static int mem_cgroup_move_account(struct page *page,
if (folio_mapped(folio)) {
__mod_lruvec_state(from_vec, NR_ANON_MAPPED, -nr_pages);
__mod_lruvec_state(to_vec, NR_ANON_MAPPED, nr_pages);
- if (folio_test_transhuge(folio)) {
+ if (folio_test_pmd_mappable(folio)) {
__mod_lruvec_state(from_vec, NR_ANON_THPS,
-nr_pages);
__mod_lruvec_state(to_vec, NR_ANON_THPS,
--
2.40.1
