Add support for bs_is_seq_rand

This option will switch the meaning of the read,write part of any
blocksize setting to mean sequential,random instead.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/cconv.c b/cconv.c
index 9de4e25..8e7c69e 100644
--- a/cconv.c
+++ b/cconv.c
@@ -123,6 +123,7 @@
 	o->softrandommap = le32_to_cpu(top->softrandommap);
 	o->bs_unaligned = le32_to_cpu(top->bs_unaligned);
 	o->fsync_on_close = le32_to_cpu(top->fsync_on_close);
+	o->bs_is_seq_rand = le32_to_cpu(top->bs_is_seq_rand);
 	o->random_distribution = le32_to_cpu(top->random_distribution);
 	o->zipf_theta.u.f = fio_uint64_to_double(le64_to_cpu(top->zipf_theta.u.i));
 	o->pareto_h.u.f = fio_uint64_to_double(le64_to_cpu(top->pareto_h.u.i));
@@ -281,6 +282,7 @@
 	top->softrandommap = cpu_to_le32(o->softrandommap);
 	top->bs_unaligned = cpu_to_le32(o->bs_unaligned);
 	top->fsync_on_close = cpu_to_le32(o->fsync_on_close);
+	top->bs_is_seq_rand = cpu_to_le32(o->bs_is_seq_rand);
 	top->random_distribution = cpu_to_le32(o->random_distribution);
 	top->zipf_theta.u.i = __cpu_to_le64(fio_double_to_uint64(o->zipf_theta.u.f));
 	top->pareto_h.u.i = __cpu_to_le64(fio_double_to_uint64(o->pareto_h.u.f));