[RFC Patch 05/11] mm/huge_memory: remove unused function split_huge_page_to_order()

[Wei Yang <richard.weiyang@gmail.com>]

The function split_huge_page_to_order() is no longer called by any part
of the codebase.

This commit removes the function entirely, cleaning up the code and
eliminating dead API.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
---
 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 872b4ed2a477..cf38ed6b9835 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -384,10 +384,6 @@ 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_folio_to_order(struct folio *folio, int new_order)
 {
@@ -624,11 +620,6 @@ 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);
-- 
2.34.1