Initial support for explicit write barriers

[fio.git] / options.c

diff --git a/options.c b/options.c
index bdf358204197b7ad1ed40bf6c2a749c2403c229c..d111018820603fe0e3a578524872343929411ce8 100644 (file)
--- a/options.c
+++ b/options.c
@@ -1185,6 +1185,13 @@ static struct fio_option options[FIO_MAX_OPTS] = {
                .help   = "Issue fdatasync for writes every given number of blocks",
                .def    = "0",
        },
+       {
+               .name   = "write_barrier",
+               .type   = FIO_OPT_INT,
+               .off1   = td_var_offset(barrier_blocks),
+               .help   = "Make every Nth write a barrier write",
+               .def    = "0",
+       },
 #ifdef FIO_HAVE_SYNC_FILE_RANGE
        {
                .name   = "sync_file_range",