[PATCH v2 14/37] mm/mm/percpu-km: drop nth_page() usage within single allocation

David Hildenbrand
2025-09-01T15:08:23Z

We're allocating a higher-order page from the buddy. For these pages
(that are guaranteed to not exceed a single memory section) there is no
need to use nth_page().

Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Acked-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
mm/percpu-km.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/percpu-km.c b/mm/percpu-km.c
index fe31aa19db81a..4efa74a495cb6 100644
--- a/mm/percpu-km.c
+++ b/mm/percpu-km.c
@@ -69,7 +69,7 @@ static struct pcpu_chunk *pcpu_create_chunk(gfp_t gfp)
}

for (i = 0; i < nr_pages; i++)
- pcpu_set_page_chunk(nth_page(pages, i), chunk);
+ pcpu_set_page_chunk(pages + i, chunk);

chunk->data = pages;
chunk->base_addr = page_address(pages);
--
2.50.1