pvsync2: add support for RWF_UNCACHED

[fio.git] / engines / sync.c

diff --git a/engines/sync.c b/engines/sync.c
index b3e1c9db8ba3eeb9d87567dc53b69de5759be715..65fd210cf108293e84f45057726c30e81881a751 100644 (file)
--- a/engines/sync.c
+++ b/engines/sync.c
@@ -39,6 +39,7 @@ struct psyncv2_options {
        void *pad;
        unsigned int hipri;
        unsigned int hipri_percentage;
+       unsigned int uncached;
 };
 
 static struct fio_option options[] = {
@@ -63,6 +64,15 @@ static struct fio_option options[] = {
                .category = FIO_OPT_C_ENGINE,
                .group  = FIO_OPT_G_INVALID,
        },
+       {
+               .name   = "uncached",
+               .lname  = "Uncached",
+               .type   = FIO_OPT_INT,
+               .off1   = offsetof(struct psyncv2_options, uncached),
+               .help   = "Use RWF_UNCACHED for buffered read/writes",
+               .category = FIO_OPT_C_ENGINE,
+               .group  = FIO_OPT_G_INVALID,
+       },
        {
                .name   = NULL,
        },
@@ -152,6 +162,8 @@ static enum fio_q_status fio_pvsyncio2_queue(struct thread_data *td,
        if (o->hipri &&
            (rand_between(&sd->rand_state, 1, 100) <= o->hipri_percentage))
                flags |= RWF_HIPRI;
+       if (!td->o.odirect && o->uncached)
+               flags |= RWF_UNCACHED;
 
        iov->iov_base = io_u->xfer_buf;
        iov->iov_len = io_u->xfer_buflen;