diff options
| -rw-r--r-- | mm/huge_memory.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 04d17ba00893..04535b64119c 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1541,15 +1541,22 @@ pmd_t *page_check_address_pmd(struct page *page, unsigned long address, enum page_check_address_pmd_flag flag) { + pgd_t *pgd; + pud_t *pud; pmd_t *pmd, *ret = NULL; if (address & ~HPAGE_PMD_MASK) goto out; - pmd = mm_find_pmd(mm, address); - if (!pmd) + pgd = pgd_offset(mm, address); + if (!pgd_present(*pgd)) goto out; - if (pmd_none(*pmd)) + pud = pud_offset(pgd, address); + if (!pud_present(*pud)) + goto out; + pmd = pmd_offset(pud, address); + + if (!pmd_present(*pmd)) goto out; if (pmd_page(*pmd) != page) goto out; |