[PATCH v2 3/5] mm/huge_memory: remove unused split_huge_page_to_order()

[Kiryl Shutsemau]

From: "Kiryl Shutsemau (Meta)" <kas@xxxxxxxxxx>

The last caller, memory_failure()'s try_to_split_thp_page(), was
converted to the folio-native split_folio_to_order() in the previous
change.  split_huge_page_to_order() now has no users; the folio helpers
(split_folio_to_order(), split_folio_to_list_to_order()) cover uniform
splits and split_huge_page() covers the order-0 case.  Remove it.

No functional change.

Signed-off-by: Kiryl Shutsemau (Meta) <kas@xxxxxxxxxx>
---
 include/linux/huge_mm.h | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index ad20f7f8c179..77483c613f84 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -414,10 +414,6 @@ static inline int split_huge_page_to_list_to_order(struct page *page, struct lis
 {
 	return __split_huge_page_to_list_to_order(page, list, new_order);
 }
-static inline int split_huge_page_to_order(struct page *page, unsigned int new_order)
-{
-	return split_huge_page_to_list_to_order(page, NULL, new_order);
-}
 
 static inline int split_huge_page(struct page *page)
 {
@@ -633,11 +629,6 @@ split_huge_page_to_list_to_order(struct page *page, struct list_head *list,
 	VM_WARN_ON_ONCE_PAGE(1, page);
 	return -EINVAL;
 }
-static inline int split_huge_page_to_order(struct page *page, unsigned int new_order)
-{
-	VM_WARN_ON_ONCE_PAGE(1, page);
-	return -EINVAL;
-}
 static inline int split_huge_page(struct page *page)
 {
 	VM_WARN_ON_ONCE_PAGE(1, page);
-- 
2.54.0