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| author | Yanfei Xu <yanfei.xu@windriver.com> | 2021-02-24 12:07:22 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-24 13:38:32 -0800 |
| commit | 5291c09b3edb657f23c1939750c702ba2d74932f (patch) | |
| tree | 75aab542e1e22e8a1474b0132b7cb0edbc9edcb3 /mm/hugetlb.c | |
| parent | 6c26d3108393211ecfd44d89404cfb744027bafd (diff) | |
| download | lwn-5291c09b3edb657f23c1939750c702ba2d74932f.tar.gz lwn-5291c09b3edb657f23c1939750c702ba2d74932f.zip | |
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.c | 7 |
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); } /* |