[PATCHv6 5/6] test/fdinfo: flush sq prior to reading

[Keith Busch <kbusch@meta.com>]

From: Keith Busch <kbusch@kernel.org>

Ensure the kernel can see the updated tail value before reading the
ring's fdinfo. This tests the kernel's handling for walking the
submission queue.

Signed-off-by: Keith Busch <kbusch@kernel.org>
---
 test/fdinfo.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/fdinfo.c b/test/fdinfo.c
index 179f575f..49522a0a 100644
--- a/test/fdinfo.c
+++ b/test/fdinfo.c
@@ -167,6 +167,7 @@ static int __test_io(const char *file, struct io_uring *ring, int write,
 			offset += BS;
 	}
 
+	__io_uring_flush_sq(ring);
 	fdinfo_read(ring);
 
 	ret = io_uring_submit(ring);
-- 
2.47.3