From: Jens Axboe <jens.axboe@oracle.com>
Date: Mon, 2 Jun 2008 08:15:48 +0000 (+0200)
Subject: Do at least one block if randommap fails us
X-Git-Tag: fio-1.21-rc4~1
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=8b113b4f2975f9edf4542d2e0f6d876dd89d1b8c;hp=c9dd34b291ad747804040cb2bb60127e6afcc3fa

Do at least one block if randommap fails us

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/io_u.c b/io_u.c
index c33dddf6..927e1611 100644
--- a/io_u.c
+++ b/io_u.c
@@ -57,8 +57,11 @@ static void mark_random_map(struct thread_data *td, struct io_u *io_u)
 		 * If we have a mixed random workload, we may
 		 * encounter blocks we already did IO to.
 		 */
-		if ((td->o.ddir_nr == 1) && !random_map_free(f, block))
+		if ((td->o.ddir_nr == 1) && !random_map_free(f, block)) {
+			if (!blocks)
+				blocks = 1;
 			break;
+		}
 
 		idx = RAND_MAP_IDX(f, block);
 		bit = RAND_MAP_BIT(f, block);