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
@@ -92,6 +92,9 @@
 #define	FAULT_FLAG_REMOTE	(1 << 7)
 #define	FAULT_FLAG_INSTRUCTION	(1 << 8)
 
+#define fault_flag_allow_retry_first(flags) \
+	(((flags) & (FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_TRIED)) == FAULT_FLAG_ALLOW_RETRY)
+
 typedef int (*pte_fn_t)(linux_pte_t *, pgtable_t, unsigned long addr, void *data);
 
 struct vm_area_struct {