diff options
Diffstat (limited to 'mm')
-rw-r--r-- | mm/memory-failure.c | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 0207c2f6f8bd..99ccb4472623 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1487,35 +1487,3 @@ done: /* keep elevated page count for bad page */ return ret; } - -/* - * The caller must hold current->mm->mmap_sem in read mode. - */ -int is_hwpoison_address(unsigned long addr) -{ - pgd_t *pgdp; - pud_t pud, *pudp; - pmd_t pmd, *pmdp; - pte_t pte, *ptep; - swp_entry_t entry; - - pgdp = pgd_offset(current->mm, addr); - if (!pgd_present(*pgdp)) - return 0; - pudp = pud_offset(pgdp, addr); - pud = *pudp; - if (!pud_present(pud) || pud_large(pud)) - return 0; - pmdp = pmd_offset(pudp, addr); - pmd = *pmdp; - if (!pmd_present(pmd) || pmd_large(pmd)) - return 0; - ptep = pte_offset_map(pmdp, addr); - pte = *ptep; - pte_unmap(ptep); - if (!is_swap_pte(pte)) - return 0; - entry = pte_to_swp_entry(pte); - return is_hwpoison_entry(entry); -} -EXPORT_SYMBOL_GPL(is_hwpoison_address); |