--- uksm-4.19.patch	2019-04-22 22:13:00.000000000 +0800
+++ uksm-4.19.37.patch	2019-05-30 17:34:09.000000000 +0800
@@ -1194,9 +1194,9 @@
  #include <linux/pkeys.h>
  #include <linux/oom.h>
 +#include <linux/ksm.h>
+ #include <linux/sched/mm.h>
  
  #include <linux/uaccess.h>
- #include <asm/cacheflush.h>
 @@ -182,6 +183,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
  	if (vma->vm_file)
  		fput(vma->vm_file);