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author | Ingo Molnar <mingo@kernel.org> | 2020-05-25 15:10:37 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2020-05-25 15:10:37 +0200 |
commit | a5d8e55b2c7d3d18d7837af0ef8d1477eeeb919c (patch) | |
tree | fe07d3af2f6f13d005da832fe3d18d5d257fb9bd /mm/hugetlb.c | |
parent | 4da0b2b7e67524cc206067865666899bc02e1cb0 (diff) | |
parent | 9cb1fd0efd195590b828b9b865421ad345a4a145 (diff) | |
download | linux-stable-a5d8e55b2c7d3d18d7837af0ef8d1477eeeb919c.tar.gz linux-stable-a5d8e55b2c7d3d18d7837af0ef8d1477eeeb919c.tar.bz2 linux-stable-a5d8e55b2c7d3d18d7837af0ef8d1477eeeb919c.zip |
Merge tag 'v5.7-rc7' into efi/core, to refresh the branch and pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/hugetlb.c')
-rw-r--r-- | mm/hugetlb.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index cd459155d28a..bcabbe02192b 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -5365,8 +5365,8 @@ pte_t *huge_pte_offset(struct mm_struct *mm, { pgd_t *pgd; p4d_t *p4d; - pud_t *pud; - pmd_t *pmd; + pud_t *pud, pud_entry; + pmd_t *pmd, pmd_entry; pgd = pgd_offset(mm, addr); if (!pgd_present(*pgd)) @@ -5376,17 +5376,19 @@ pte_t *huge_pte_offset(struct mm_struct *mm, return NULL; pud = pud_offset(p4d, addr); - if (sz != PUD_SIZE && pud_none(*pud)) + pud_entry = READ_ONCE(*pud); + if (sz != PUD_SIZE && pud_none(pud_entry)) return NULL; /* hugepage or swap? */ - if (pud_huge(*pud) || !pud_present(*pud)) + if (pud_huge(pud_entry) || !pud_present(pud_entry)) return (pte_t *)pud; pmd = pmd_offset(pud, addr); - if (sz != PMD_SIZE && pmd_none(*pmd)) + pmd_entry = READ_ONCE(*pmd); + if (sz != PMD_SIZE && pmd_none(pmd_entry)) return NULL; /* hugepage or swap? */ - if (pmd_huge(*pmd) || !pmd_present(*pmd)) + if (pmd_huge(pmd_entry) || !pmd_present(pmd_entry)) return (pte_t *)pmd; return NULL; |