mm/swapfile: Use vma iterator instead of vma linked list

unuse_mm() no longer needs to reference the linked list.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>

diff --git a/mm/swapfile.c b/mm/swapfile.c
index bf0df7aa7158fee191a5cb03667be0f598971021..fc17e02f12c6178fd694112d89d8ff5464db1c47 100644 (file)
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -2071,14 +2071,16 @@ static int unuse_mm(struct mm_struct *mm, unsigned int type)
 {
        struct vm_area_struct *vma;
        int ret = 0;
+       VMA_ITERATOR(vmi, mm, 0);
 
        mmap_read_lock(mm);
-       for (vma = mm->mmap; vma; vma = vma->vm_next) {
+       for_each_vma(vmi, vma) {
                if (vma->anon_vma) {
                        ret = unuse_vma(vma, type);
                        if (ret)
                                break;
                }
+
                cond_resched();
        }
        mmap_read_unlock(mm);