From 15cd90049d595e592d8860ee15a3f23491d54d17 Mon Sep 17 00:00:00 2001 From: Yafang Shao Date: Thu, 6 Oct 2022 10:15:40 +0000 Subject: mm/page_alloc: fix incorrect PGFREE and PGALLOC for high-order page PGFREE and PGALLOC represent the number of freed and allocated pages. So the page order must be considered. Link: https://lkml.kernel.org/r/20221006101540.40686-1-laoar.shao@gmail.com Fixes: 44042b449872 ("mm/page_alloc: allow high-order pages to be stored on the per-cpu lists") Signed-off-by: Yafang Shao Acked-by: Mel Gorman Reviewed-by: Miaohe Lin Signed-off-by: Andrew Morton --- mm/page_alloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'mm') diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 059f6946832f..8e9b7f08a32c 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3446,7 +3446,7 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp, int pindex; bool free_high; - __count_vm_event(PGFREE); + __count_vm_events(PGFREE, 1 << order); pindex = order_to_pindex(migratetype, order); list_add(&page->pcp_list, &pcp->lists[pindex]); pcp->count += 1 << order; @@ -3803,7 +3803,7 @@ static struct page *rmqueue_pcplist(struct zone *preferred_zone, pcp_spin_unlock_irqrestore(pcp, flags); pcp_trylock_finish(UP_flags); if (page) { - __count_zid_vm_events(PGALLOC, page_zonenum(page), 1); + __count_zid_vm_events(PGALLOC, page_zonenum(page), 1 << order); zone_statistics(preferred_zone, zone, 1); } return page; -- cgit v1.2.3