mm, hugetlb: convert hugetlbfs to use split pmd lock

[~andy/linux] / mm / mempolicy.c

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 4cc19f6ab6c6f84da6bb99955f5026a9bc066a76..c4403cdf3433ddc79515dac25e5eedd0b39fa320 100644 (file)
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -525,8 +525,9 @@ static void queue_pages_hugetlb_pmd_range(struct vm_area_struct *vma,
 #ifdef CONFIG_HUGETLB_PAGE
        int nid;
        struct page *page;
+       spinlock_t *ptl;
 
-       spin_lock(&vma->vm_mm->page_table_lock);
+       ptl = huge_pte_lock(hstate_vma(vma), vma->vm_mm, (pte_t *)pmd);
        page = pte_page(huge_ptep_get((pte_t *)pmd));
        nid = page_to_nid(page);
        if (node_isset(nid, *nodes) == !!(flags & MPOL_MF_INVERT))
@@ -536,7 +537,7 @@ static void queue_pages_hugetlb_pmd_range(struct vm_area_struct *vma,
            (flags & MPOL_MF_MOVE && page_mapcount(page) == 1))
                isolate_huge_page(page, private);
 unlock:
-       spin_unlock(&vma->vm_mm->page_table_lock);
+       spin_unlock(ptl);
 #else
        BUG();
 #endif