io_uring: we should not need two write barriers for SQ updates

[fio.git] / engines / io_uring.c

diff --git a/engines/io_uring.c b/engines/io_uring.c
index 5e59f975c3c529ab735961763c49270ec63eb111..1efc6cffc6f821f2f8c3f61151976e755e083bdb 100644 (file)
--- a/engines/io_uring.c
+++ b/engines/io_uring.c
@@ -374,8 +374,6 @@ static enum fio_q_status fio_ioring_queue(struct thread_data *td,
        if (next_tail == *ring->head)
                return FIO_Q_BUSY;
 
        if (next_tail == *ring->head)
                return FIO_Q_BUSY;
 

-       /* ensure sqe stores are ordered with tail update */
-       write_barrier();

        if (o->cmdprio_percentage)
                fio_ioring_prio_prep(td, io_u);
        ring->array[tail & ld->sq_ring_mask] = io_u->index;
        if (o->cmdprio_percentage)
                fio_ioring_prio_prep(td, io_u);
        ring->array[tail & ld->sq_ring_mask] = io_u->index;