diff options
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index abc1c5fb7222..87e11d8ad536 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1448,6 +1448,7 @@ static void dissolve_free_huge_page(struct page *page) list_del(&page->lru); h->free_huge_pages--; h->free_huge_pages_node[nid]--; + h->max_huge_pages--; update_and_free_page(h, page); } spin_unlock(&hugetlb_lock); @@ -2216,6 +2217,10 @@ static unsigned long set_max_huge_pages(struct hstate *h, unsigned long count, * and reducing the surplus. */ spin_unlock(&hugetlb_lock); + + /* yield cpu to avoid soft lockup */ + cond_resched(); + if (hstate_is_gigantic(h)) ret = alloc_fresh_gigantic_page(h, nodes_allowed); else @@ -3316,7 +3321,7 @@ static void unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma, address = address & huge_page_mask(h); pgoff = ((address - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff; - mapping = file_inode(vma->vm_file)->i_mapping; + mapping = vma->vm_file->f_mapping; /* * Take the mapping lock for the duration of the table walk. As @@ -3938,6 +3943,14 @@ same_page: return i ? i : -EFAULT; } +#ifndef __HAVE_ARCH_FLUSH_HUGETLB_TLB_RANGE +/* + * ARCHes with special requirements for evicting HUGETLB backing TLB entries can + * implement this. + */ +#define flush_hugetlb_tlb_range(vma, addr, end) flush_tlb_range(vma, addr, end) +#endif + unsigned long hugetlb_change_protection(struct vm_area_struct *vma, unsigned long address, unsigned long end, pgprot_t newprot) { @@ -3998,7 +4011,7 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma, * once we release i_mmap_rwsem, another task can do the final put_page * and that page table be reused and filled with junk. */ - flush_tlb_range(vma, start, end); + flush_hugetlb_tlb_range(vma, start, end); mmu_notifier_invalidate_range(mm, start, end); i_mmap_unlock_write(vma->vm_file->f_mapping); mmu_notifier_invalidate_range_end(mm, start, end); @@ -4306,7 +4319,7 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, pte = (pte_t *)pmd_alloc(mm, pud, addr); } } - BUG_ON(pte && !pte_none(*pte) && !pte_huge(*pte)); + BUG_ON(pte && pte_present(*pte) && !pte_huge(*pte)); return pte; } @@ -4391,7 +4404,6 @@ follow_huge_pud(struct mm_struct *mm, unsigned long address, /* * This function is called from memory failure code. - * Assume the caller holds page lock of the head page. */ int dequeue_hwpoisoned_huge_page(struct page *hpage) { |
