diff --git a/mm/ksm.c b/mm/ksm.c
index 9638620..14ee5cf 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1618,7 +1618,8 @@
 		struct vm_area_struct *vma;
 
 		anon_vma_lock(anon_vma);
-		list_for_each_entry(vmac, &anon_vma->head, same_anon_vma) {
+		anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root,
+					       0, ULONG_MAX) {
 			vma = vmac->vma;
 			if (rmap_item->address < vma->vm_start ||
 			    rmap_item->address >= vma->vm_end)
@@ -1671,7 +1672,8 @@
 		struct vm_area_struct *vma;
 
 		anon_vma_lock(anon_vma);
-		list_for_each_entry(vmac, &anon_vma->head, same_anon_vma) {
+		anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root,
+					       0, ULONG_MAX) {
 			vma = vmac->vma;
 			if (rmap_item->address < vma->vm_start ||
 			    rmap_item->address >= vma->vm_end)
@@ -1723,7 +1725,8 @@
 		struct vm_area_struct *vma;
 
 		anon_vma_lock(anon_vma);
-		list_for_each_entry(vmac, &anon_vma->head, same_anon_vma) {
+		anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root,
+					       0, ULONG_MAX) {
 			vma = vmac->vma;
 			if (rmap_item->address < vma->vm_start ||
 			    rmap_item->address >= vma->vm_end)