diff --git a/sys/compat/linuxkpi/common/include/linux/mm.h b/sys/compat/linuxkpi/common/include/linux/mm.h
--- a/sys/compat/linuxkpi/common/include/linux/mm.h
+++ b/sys/compat/linuxkpi/common/include/linux/mm.h
@@ -40,6 +40,7 @@
 #include <linux/pfn.h>
 #include <linux/list.h>
 #include <linux/mmap_lock.h>
+#include <linux/shrinker.h>
 
 #include <asm/pgtable.h>