[PATCH v2 4/6] slub: Use a folio in __kmalloc_large_node

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

Mirror the code in free_large_kmalloc() and alloc_pages_node()
and use a folio directly.  Avoid the use of folio_alloc() as
that will set up an rmappable folio which we do not want here.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 mm/slub.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 58b4936f2a29..71d5840de65d 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3915,7 +3915,7 @@ EXPORT_SYMBOL(kmem_cache_alloc_node);
  */
 static void *__kmalloc_large_node(size_t size, gfp_t flags, int node)
 {
-	struct page *page;
+	struct folio *folio;
 	void *ptr = NULL;
 	unsigned int order = get_order(size);
 
@@ -3923,10 +3923,10 @@ static void *__kmalloc_large_node(size_t size, gfp_t flags, int node)
 		flags = kmalloc_fix_flags(flags);
 
 	flags |= __GFP_COMP;
-	page = alloc_pages_node(node, flags, order);
-	if (page) {
-		ptr = page_address(page);
-		mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE_B,
+	folio = (struct folio *)alloc_pages_node(node, flags, order);
+	if (folio) {
+		ptr = folio_address(folio);
+		lruvec_stat_mod_folio(folio, NR_SLAB_UNRECLAIMABLE_B,
 				      PAGE_SIZE << order);
 	}
 
-- 
2.43.0