block: reimplement FLUSH/FUA to support merge

[deliverable/linux.git] / include / linux / elevator.h

diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 4fd978e7eb83ef8d689d0d313b5441b0631ea275..86120c916fcc05c2190db55b0a8e0b350610e3ab 100644 (file)
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -167,6 +167,7 @@ extern struct request *elv_rb_find(struct rb_root *, sector_t);
 #define ELEVATOR_INSERT_BACK   2
 #define ELEVATOR_INSERT_SORT   3
 #define ELEVATOR_INSERT_REQUEUE        4
+#define ELEVATOR_INSERT_FLUSH  5
 
 /*
  * return values from elevator_may_queue_fn