1 files changed, 2 insertions, 6 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index fa35323a3c5b..5ecc2cf3e1d7 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1673,9 +1673,7 @@ static void unmap_region(struct mm_struct *mm,
         lru_add_drain();
         tlb = tlb_gather_mmu(mm, 0);
         update_hiwater_rss(mm);
-        spin_lock(&mm->page_table_lock);
-        unmap_vmas(&tlb, mm, vma, start, end, &nr_accounted, NULL);
-        spin_unlock(&mm->page_table_lock);
+        unmap_vmas(&tlb, vma, start, end, &nr_accounted, NULL);
         vm_unacct_memory(nr_accounted);
         free_pgtables(&tlb, vma, prev? prev->vm_end: FIRST_USER_ADDRESS,
                                  next? next->vm_start: 0);
@@ -1958,9 +1956,7 @@ void exit_mmap(struct mm_struct *mm)
         tlb = tlb_gather_mmu(mm, 1);
         /* Don't update_hiwater_rss(mm) here, do_exit already did */
         /* Use -1 here to ensure all VMAs in the mm are unmapped */
-        spin_lock(&mm->page_table_lock);
-        end = unmap_vmas(&tlb, mm, vma, 0, -1, &nr_accounted, NULL);
-        spin_unlock(&mm->page_table_lock);
+        end = unmap_vmas(&tlb, vma, 0, -1, &nr_accounted, NULL);
         vm_unacct_memory(nr_accounted);
         free_pgtables(&tlb, vma, FIRST_USER_ADDRESS, 0);
         tlb_finish_mmu(tlb, 0, end);