[PATCH v2 03/16] mm/page_alloc: Export free_frozen_pages() instead of free_unref_page()

["Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>]

This API makes more sense for slab to use and it works perfectly
well for swap.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: William Kucharski <william.kucharski@xxxxxxxxxx>
---
 mm/internal.h   |  4 ++--
 mm/page_alloc.c | 18 +++++++++---------
 mm/swap.c       |  2 +-
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/mm/internal.h b/mm/internal.h
index 785409805ed7..08d0881223cf 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -362,8 +362,8 @@ extern void post_alloc_hook(struct page *page, unsigned int order,
 					gfp_t gfp_flags);
 extern int user_min_free_kbytes;
 
-extern void free_unref_page(struct page *page, unsigned int order);
-extern void free_unref_page_list(struct list_head *list);
+void free_frozen_pages(struct page *, unsigned int order);
+void free_unref_page_list(struct list_head *list);
 
 extern void zone_pcp_update(struct zone *zone, int cpu_online);
 extern void zone_pcp_reset(struct zone *zone);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 04260b5a7699..30e7a5974d39 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -761,14 +761,6 @@ static inline bool pcp_allowed_order(unsigned int order)
 	return false;
 }
 
-static inline void free_frozen_pages(struct page *page, unsigned int order)
-{
-	if (pcp_allowed_order(order))		/* Via pcp? */
-		free_unref_page(page, order);
-	else
-		__free_pages_ok(page, order, FPI_NONE);
-}
-
 /*
  * Higher-order pages are called "compound pages".  They are structured thusly:
  *
@@ -3464,7 +3456,7 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
 /*
  * Free a pcp page
  */
-void free_unref_page(struct page *page, unsigned int order)
+static void free_unref_page(struct page *page, unsigned int order)
 {
 	unsigned long flags;
 	unsigned long __maybe_unused UP_flags;
@@ -3504,6 +3496,14 @@ void free_unref_page(struct page *page, unsigned int order)
 	pcp_trylock_finish(UP_flags);
 }
 
+void free_frozen_pages(struct page *page, unsigned int order)
+{
+	if (pcp_allowed_order(order))		/* Via pcp? */
+		free_unref_page(page, order);
+	else
+		__free_pages_ok(page, order, FPI_NONE);
+}
+
 /*
  * Free a list of 0-order pages
  */
diff --git a/mm/swap.c b/mm/swap.c
index 6525011b715e..647f6f77193f 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -102,7 +102,7 @@ static void __folio_put_small(struct folio *folio)
 {
 	__page_cache_release(folio);
 	mem_cgroup_uncharge(folio);
-	free_unref_page(&folio->page, 0);
+	free_frozen_pages(&folio->page, 0);
 }
 
 static void __folio_put_large(struct folio *folio)
-- 
2.35.1