diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index c6c80265c0b25db0360c6bb6f840a77b11a18063..e462d39c840e62911242e1e157756b81d8737c9d 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -1261,7 +1261,7 @@ xfs_file_llseek(
 }
 
 #ifdef CONFIG_FS_DAX
-static int
+static inline vm_fault_t
 xfs_dax_fault(
 	struct vm_fault		*vmf,
 	enum page_entry_size	pe_size,
@@ -1274,14 +1274,15 @@ xfs_dax_fault(
 				&xfs_read_iomap_ops);
 }
 #else
-static int
+static inline vm_fault_t
 xfs_dax_fault(
 	struct vm_fault		*vmf,
 	enum page_entry_size	pe_size,
 	bool			write_fault,
 	pfn_t			*pfn)
 {
-	return 0;
+	ASSERT(0);
+	return VM_FAULT_SIGBUS;
 }
 #endif