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authorYanfei Xu <yanfei.xu@windriver.com>2021-02-24 23:07:22 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-25 00:38:32 +0300
commit5291c09b3edb657f23c1939750c702ba2d74932f (patch)
tree75aab542e1e22e8a1474b0132b7cb0edbc9edcb3 /mm/hugetlb.c
parent6c26d3108393211ecfd44d89404cfb744027bafd (diff)
downloadlinux-5291c09b3edb657f23c1939750c702ba2d74932f.tar.xz
mm/hugetlb: remove redundant check in preparing and destroying gigantic page
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 <yanfei.xu@windriver.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb.c')
-rw-r--r--mm/hugetlb.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index fc895e25920c..527e2b89e209 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1234,8 +1234,7 @@ 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);
@@ -1563,9 +1562,7 @@ 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);
}
/*