blktrace support: discard notify messages

They are not interesting to us (they contain things like timestamps
and process information).

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/blktrace.c b/blktrace.c
index 8ba538ae8abc57dc1093df9273b2a894aae81cd8..5825d29714e13627dd9712699a904f752445cd70 100644 (file)
--- a/blktrace.c
+++ b/blktrace.c
@@ -133,11 +133,7 @@ static void handle_trace(struct thread_data *td, struct blk_io_trace *t,
                return;
        if (t->action & BLK_TC_ACT(BLK_TC_PC))
                return;
-
-       /*
-        * should not happen, need to look into that...
-        */
-       if (!t->bytes)
+       if (t->action & BLK_TC_ACT(BLK_TC_NOTIFY))
                return;
 
        rw = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0;