diff mbox series

[v2,05/16] mm/page_alloc: Move set_page_refcounted() to callers of prep_new_page()

Message ID 20220809171854.3725722-6-willy@infradead.org (mailing list archive)
State New
Headers show
Series Allocate and free frozen pages | expand

Commit Message

Matthew Wilcox Aug. 9, 2022, 5:18 p.m. UTC 
In preparation for allocating frozen pages, stop initialising the page
refcount in prep_new_page().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/page_alloc.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d41b8c8f3135..9bc53001f56c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2535,7 +2535,6 @@  static void prep_new_page(struct page *page, unsigned int order, gfp_t gfp_flags
 		set_page_pfmemalloc(page);
 	else
 		clear_page_pfmemalloc(page);
-	set_page_refcounted(page);
 }
 
 /*
@@ -4281,6 +4280,7 @@  get_page_from_freelist(gfp_t gfp_mask, unsigned int order, int alloc_flags,
 				gfp_mask, alloc_flags, ac->migratetype);
 		if (page) {
 			prep_new_page(page, order, gfp_mask, alloc_flags);
+			set_page_refcounted(page);
 
 			/*
 			 * If this is a high-order atomic allocation then check
@@ -4504,8 +4504,10 @@  __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order,
 	count_vm_event(COMPACTSTALL);
 
 	/* Prep a captured page if available */
-	if (page)
+	if (page) {
 		prep_new_page(page, order, gfp_mask, alloc_flags);
+		set_page_refcounted(page);
+	}
 
 	/* Try get a page from the freelist if available */
 	if (!page)
@@ -5440,6 +5442,7 @@  unsigned long __alloc_pages_bulk(gfp_t gfp, int preferred_nid,
 		nr_account++;
 
 		prep_new_page(page, 0, gfp, 0);
+		set_page_refcounted(page);
 		if (page_list)
 			list_add(&page->lru, page_list);
 		else