From: Dmitry Monakhov <dmonakhov@openvz.org>
Date: Tue, 25 Sep 2012 10:12:36 +0000 (+0200)
Subject: backend: fix data direction flow check
X-Git-Tag: fio-2.0.10~15
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=88045e04fdd81dbb584d70f9faeb1f6498a85159;p=fio.git

backend: fix data direction flow check

This patch fix regression caused SIGSEGV in case of writeonly
or readonly mode, caused by commit 59d8d0f5.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/backend.c b/backend.c
index 88623bea..c31d22af 100644
--- a/backend.c
+++ b/backend.c
@@ -812,7 +812,7 @@ static int init_io_u(struct thread_data *td)
 	td->orig_buffer_size = (unsigned long long) max_bs
 					* (unsigned long long) max_units;
 
-	if ((td->io_ops->flags & FIO_NOIO) || !td_rw(td))
+	if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
 		data_xfer = 0;
 
 	if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {