From 99955d3d3e290ccb06583a821a8112210e4b332d Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@fb.com>
Date: Fri, 29 Jul 2016 09:59:38 -0600
Subject: [PATCH] backend: do_dry_run(): get_io_u() can return an error pointer

Don't just check for NULL.

Signed-off-by: Jens Axboe <axboe@fb.com>
---
 backend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend.c b/backend.c
index 2f290d2d..8a71490e 100644
--- a/backend.c
+++ b/backend.c
@@ -1399,7 +1399,7 @@ static uint64_t do_dry_run(struct thread_data *td)
 			break;
 
 		io_u = get_io_u(td);
-		if (!io_u)
+		if (IS_ERR_OR_NULL(io_u))
 			break;
 
 		io_u_set(io_u, IO_U_F_FLIGHT);
-- 
2.25.1