From: Yanfei Xu Date: Wed, 24 Feb 2021 20:07:22 +0000 (-0800) Subject: mm/hugetlb: remove redundant check in preparing and destroying gigantic page X-Git-Tag: v5.10.79~2792 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2e16ad561143b97df021016e1835e5ea72ad499a;p=platform%2Fkernel%2Flinux-rpi.git mm/hugetlb: remove redundant check in preparing and destroying gigantic page [ Upstream commit 5291c09b3edb657f23c1939750c702ba2d74932f ] Gigantic page is a compound page and its order is more than 1. Thus it must be available for hpage_pincount. Let's remove the redundant check for gigantic page. Link: https://lkml.kernel.org/r/20210202112002.73170-1-yanfei.xu@windriver.com Signed-off-by: Yanfei Xu Reviewed-by: Mike Kravetz Reviewed-by: David Hildenbrand Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 991b5cd..f90dd90 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1252,8 +1252,7 @@ static void destroy_compound_gigantic_page(struct page *page, struct page *p = page + 1; atomic_set(compound_mapcount_ptr(page), 0); - if (hpage_pincount_available(page)) - atomic_set(compound_pincount_ptr(page), 0); + atomic_set(compound_pincount_ptr(page), 0); for (i = 1; i < nr_pages; i++, p = mem_map_next(p, page, i)) { clear_compound_head(p); @@ -1583,9 +1582,7 @@ static void prep_compound_gigantic_page(struct page *page, unsigned int order) set_compound_head(p, page); } atomic_set(compound_mapcount_ptr(page), -1); - - if (hpage_pincount_available(page)) - atomic_set(compound_pincount_ptr(page), 0); + atomic_set(compound_pincount_ptr(page), 0); } /*