diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 12c55bbec8c0..0549ca17ba6f 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -245,8 +245,4 @@ pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms)
 int register_vmap_purge_notifier(struct notifier_block *nb);
 int unregister_vmap_purge_notifier(struct notifier_block *nb);
 
-#ifndef arch_disable_lazy_vunmap
-#define arch_disable_lazy_vunmap false
-#endif
-
 #endif /* _LINUX_VMALLOC_H */
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 50d49ca35885..817a472ee30f 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1297,9 +1297,6 @@ static unsigned long lazy_max_pages(void)
 {
 	unsigned int log;
 
-	if (arch_disable_lazy_vunmap)
-		return 0;
-
 	log = fls(num_online_cpus());
 
 	return log * (32UL * 1024 * 1024 / PAGE_SIZE);