powerpc: add support for TIF_NOTIFY_SIGNAL

[linux-2.6-microblaze.git] / mm / debug_vm_pgtable.c

diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c
index 9a0a42a..c05d9dc 100644 (file)
--- a/mm/debug_vm_pgtable.c
+++ b/mm/debug_vm_pgtable.c
@@ -943,7 +943,13 @@ static int __init debug_vm_pgtable(void)
        p4dp = p4d_alloc(mm, pgdp, vaddr);
        pudp = pud_alloc(mm, p4dp, vaddr);
        pmdp = pmd_alloc(mm, pudp, vaddr);
-       ptep = pte_alloc_map(mm, pmdp, vaddr);
+       /*
+        * Allocate pgtable_t
+        */
+       if (pte_alloc(mm, pmdp)) {
+               pr_err("pgtable allocation failed\n");
+               return 1;
+       }
 
        /*
         * Save all the page table page addresses as the page table
@@ -997,8 +1003,7 @@ static int __init debug_vm_pgtable(void)
         * proper page table lock.
         */
 
-       ptl = pte_lockptr(mm, pmdp);
-       spin_lock(ptl);
+       ptep = pte_offset_map_lock(mm, pmdp, vaddr, &ptl);
        pte_clear_tests(mm, ptep, pte_aligned, vaddr, prot);
        pte_advanced_tests(mm, vma, ptep, pte_aligned, vaddr, prot);
        pte_unmap_unlock(ptep, ptl);