diff --git a/fs/aio.c b/fs/aio.c
index d3a6ec2..5f577a6 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -586,7 +586,7 @@
 	 * Note that on UML this *requires* PF_BORROWED_MM to be set, otherwise
 	 * it won't work. Update it accordingly if you change it here
 	 */
-	activate_mm(active_mm, mm);
+	switch_mm(active_mm, mm, tsk);
 	task_unlock(tsk);
 
 	mmdrop(active_mm);