diff --git a/include/linux/mm.h b/include/linux/mm.h
index b01e585..bcaab4e 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -161,6 +161,7 @@
 #define FAULT_FLAG_ALLOW_RETRY	0x08	/* Retry fault if blocking */
 #define FAULT_FLAG_RETRY_NOWAIT	0x10	/* Don't drop mmap_sem and wait when retrying */
 #define FAULT_FLAG_KILLABLE	0x20	/* The fault task is in SIGKILL killable region */
+#define FAULT_FLAG_TRIED	0x40	/* second try */
 
 /*
  * vm_fault is filled by the the pagefault handler and passed to the vma's