arch/powerpc: Remove mmap linked list from mm/book3s64/subpage_prot

Start using the maple tree

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>

diff --git a/arch/powerpc/mm/book3s64/subpage_prot.c b/arch/powerpc/mm/book3s64/subpage_prot.c
index 60c6ea16a972afc6e26bd615bd3eba2968c1a8a8..51722199408e7da662019ee68ef5c8f7b2c0f69f 100644 (file)
--- a/arch/powerpc/mm/book3s64/subpage_prot.c
+++ b/arch/powerpc/mm/book3s64/subpage_prot.c
@@ -149,25 +149,18 @@ static void subpage_mark_vma_nohuge(struct mm_struct *mm, unsigned long addr,
                                    unsigned long len)
 {
        struct vm_area_struct *vma;
+       MA_STATE(mas, &mm->mm_mt, addr, addr);
 
        /*
         * We don't try too hard, we just mark all the vma in that range
         * VM_NOHUGEPAGE and split them.
         */
-       vma = find_vma(mm, addr);
-       /*
-        * If the range is in unmapped range, just return
-        */
-       if (vma && ((addr + len) <= vma->vm_start))
-               return;
-
-       while (vma) {
-               if (vma->vm_start >= (addr + len))
-                       break;
+       rcu_read_lock();
+       mas_for_each(&mas, vma, addr + len) {
                vma->vm_flags |= VM_NOHUGEPAGE;
                walk_page_vma(vma, &subpage_walk_ops, NULL);
-               vma = vma->vm_next;
        }
+       rcu_read_unlock();
 }
 #else
 static void subpage_mark_vma_nohuge(struct mm_struct *mm, unsigned long addr,