mm: revert "thp: make MADV_HUGEPAGE check for mm->def_flags"

[firefly-linux-kernel-4.4.55.git] / mm / hugetlb.c

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 6cddfadaba03887b3fd44a8ed654ccaadd295192..ed5072c64daac1a40ceaec919e73bb7dfb93f0ad 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3186,6 +3186,7 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma,
        BUG_ON(address >= end);
        flush_cache_range(vma, address, end);
 
+       mmu_notifier_invalidate_range_start(mm, start, end);
        mutex_lock(&vma->vm_file->f_mapping->i_mmap_mutex);
        for (; address < end; address += huge_page_size(h)) {
                spinlock_t *ptl;
@@ -3215,6 +3216,7 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma,
         */
        flush_tlb_range(vma, start, end);
        mutex_unlock(&vma->vm_file->f_mapping->i_mmap_mutex);
+       mmu_notifier_invalidate_range_end(mm, start, end);
 
        return pages << h->order;
 }