diff options
Diffstat (limited to 'arch/ppc64/mm')
| -rw-r--r-- | arch/ppc64/mm/hugetlbpage.c | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/arch/ppc64/mm/hugetlbpage.c b/arch/ppc64/mm/hugetlbpage.c index 8665bb57e42..390296efe3e 100644 --- a/arch/ppc64/mm/hugetlbpage.c +++ b/arch/ppc64/mm/hugetlbpage.c @@ -203,8 +203,6 @@ static int prepare_low_seg_for_htlb(struct mm_struct *mm, unsigned long seg) unsigned long start = seg << SID_SHIFT; unsigned long end = (seg+1) << SID_SHIFT; struct vm_area_struct *vma; - unsigned long addr; - struct mmu_gather *tlb; BUG_ON(seg >= 16); @@ -213,41 +211,6 @@ static int prepare_low_seg_for_htlb(struct mm_struct *mm, unsigned long seg) if (vma && (vma->vm_start < end)) return -EBUSY; - /* Clean up any leftover PTE pages in the region */ - spin_lock(&mm->page_table_lock); - tlb = tlb_gather_mmu(mm, 0); - for (addr = start; addr < end; addr += PMD_SIZE) { - pgd_t *pgd = pgd_offset(mm, addr); - pmd_t *pmd; - struct page *page; - pte_t *pte; - int i; - - if (pgd_none(*pgd)) - continue; - pmd = pmd_offset(pgd, addr); - if (!pmd || pmd_none(*pmd)) - continue; - if (pmd_bad(*pmd)) { - pmd_ERROR(*pmd); - pmd_clear(pmd); - continue; - } - pte = (pte_t *)pmd_page_kernel(*pmd); - /* No VMAs, so there should be no PTEs, check just in case. */ - for (i = 0; i < PTRS_PER_PTE; i++) { - BUG_ON(!pte_none(*pte)); - pte++; - } - page = pmd_page(*pmd); - pmd_clear(pmd); - mm->nr_ptes--; - dec_page_state(nr_page_table_pages); - pte_free_tlb(tlb, page); - } - tlb_finish_mmu(tlb, start, end); - spin_unlock(&mm->page_table_lock); - return 0; } |