diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/mm/hugetlbpage.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/i386/mm/hugetlbpage.c b/arch/i386/mm/hugetlbpage.c index 3b099f32b94..57c486f0e89 100644 --- a/arch/i386/mm/hugetlbpage.c +++ b/arch/i386/mm/hugetlbpage.c @@ -22,12 +22,21 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr) { pgd_t *pgd; pud_t *pud; - pmd_t *pmd = NULL; + pmd_t *pmd; + pte_t *pte = NULL; pgd = pgd_offset(mm, addr); pud = pud_alloc(mm, pgd, addr); pmd = pmd_alloc(mm, pud, addr); - return (pte_t *) pmd; + + if (!pmd) + goto out; + + pte = (pte_t *) pmd; + if (!pte_none(*pte) && !pte_huge(*pte)) + hugetlb_clean_stale_pgtable(pte); +out: + return pte; } pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) |