mm/hugetlb: fix nid mismatch in alloc_surplus_hugetlb_folio()

commit 382360d
Author: Liu Shixin <liushixin2@huawei.com>
Date:   Thu Apr 3 14:41:38 2025 +0800

    mm/hugetlb: fix nid mismatch in alloc_surplus_hugetlb_folio()

    It's wrong to use nid directly since the nid may be changed in allocation.
    Use folio_nid() to obtain the nid of folio instead.

    Fix: 2273dea ("mm/hugetlb: update nr_huge_pages and surplus_huge_pages together")
    Link: https://lkml.kernel.org/r/20250403064138.2867929-1-liushixin2@huawei.com
    Signed-off-by: Liu Shixin <liushixin2@huawei.com>
    Acked-by: Oscar Salvador <osalvador@suse.de>
    Cc: David Hildenbrand <david@redhat.com>
    Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
    Cc: Muchun Song <muchun.song@linux.dev>
    Cc: Nanyong Sun <sunnanyong@huawei.com>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

JIRA: https://issues.redhat.com/browse/RHEL-77742
Signed-off-by: Nico Pache <npache@redhat.com>

Author: PacheNico

mm/hugetlb.c

@@ -2327,7 +2327,7 @@ static struct folio *alloc_surplus_hugetlb_folio(struct hstate *h,
 	 * as surplus_pages, otherwise it might confuse
 	 * persistent_huge_pages() momentarily.
 	 */
-	__prep_account_new_huge_page(h, nid);
+	__prep_account_new_huge_page(h, folio_nid(folio));
 
 	/*
 	 * We could have raced with the pool size change.