[PATCH] mm: unmap_vmas with inner ptlock

[linux-2.6-omap-h63xx.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index fa35323a3c5b94a9e5290b93fd43f1717b3cb173..5ecc2cf3e1d7fe27ef49787cb0909d1c3f96eebf 100644 (file)
--- 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);