backend: cleanup overlap submission logic
[fio.git] / backend.c
index f003761..d2675b4 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -617,6 +617,19 @@ static bool in_flight_overlap(struct io_u_queue *q, struct io_u *io_u)
        return overlap;
 }
 
+static int io_u_submit(struct thread_data *td, struct io_u *io_u)
+{
+       /*
+        * Check for overlap if the user asked us to, and we have
+        * at least one IO in flight besides this one.
+        */
+       if (td->o.serialize_overlap && td->cur_depth > 1 &&
+           in_flight_overlap(&td->io_u_all, io_u))
+               return FIO_Q_BUSY;
+
+       return td_io_queue(td, io_u);
+}
+
 /*
  * The main verify engine. Runs over the writes we previously submitted,
  * reads the blocks back in, and checks the crc/md5 of the data.
@@ -747,13 +760,7 @@ static void do_verify(struct thread_data *td, uint64_t verify_bytes)
                if (!td->o.disable_slat)
                        fio_gettime(&io_u->start_time, NULL);
 
-               if (td->o.serialize_overlap && td->cur_depth > 0) {
-                       if (in_flight_overlap(&td->io_u_all, io_u))
-                               ret = FIO_Q_BUSY;
-                       else
-                               ret = td_io_queue(td, io_u);
-               } else
-                       ret = td_io_queue(td, io_u);
+               ret = io_u_submit(td, io_u);
 
                if (io_queue_event(td, io_u, &ret, ddir, NULL, 1, NULL))
                        break;
@@ -1020,13 +1027,7 @@ static void do_io(struct thread_data *td, uint64_t *bytes_done)
                                td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
 
                } else {
-                       if (td->o.serialize_overlap && td->cur_depth > 0) {
-                               if (in_flight_overlap(&td->io_u_all, io_u))
-                                       ret = FIO_Q_BUSY;
-                               else
-                                       ret = td_io_queue(td, io_u);
-                       } else
-                               ret = td_io_queue(td, io_u);
+                       ret = io_u_submit(td, io_u);
 
                        if (should_check_rate(td))
                                td->rate_next_io_time[ddir] = usec_for_io(td, ddir);