From c45bc55a99957b20e4e0333bcd42e12d1833a7f5 Mon Sep 17 00:00:00 2001 From: Sidhartha Kumar Date: Mon, 12 Dec 2022 14:55:29 -0800 Subject: [PATCH] mm/hugetlb: set head flag before setting compound_order in __prep_compound_gigantic_folio folio_set_compound_order() checks if the passed in folio is a large folio. A large folio is indicated by the PG_head flag. Call __folio_set_head() before setting the order. Link: https://lkml.kernel.org/r/20221212225529.22493-1-sidhartha.kumar@oracle.com Fixes: d1c6095572d0 ("mm/hugetlb: convert hugetlb prep functions to folios") Signed-off-by: Sidhartha Kumar Reported-by: David Hildenbrand Signed-off-by: Andrew Morton --- mm/hugetlb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 8c6fe2286814..7cdbcc22587b 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1805,10 +1805,10 @@ static bool __prep_compound_gigantic_folio(struct folio *folio, int nr_pages = 1 << order; struct page *p; - /* we rely on prep_new_hugetlb_folio to set the destructor */ - folio_set_compound_order(folio, order); __folio_clear_reserved(folio); __folio_set_head(folio); + /* we rely on prep_new_hugetlb_folio to set the destructor */ + folio_set_compound_order(folio, order); for (i = 0; i < nr_pages; i++) { p = folio_page(folio, i); -- 2.25.1