From: Jens Axboe <jens.axboe@oracle.com>
Date: Thu, 8 Mar 2007 12:33:36 +0000 (+0100)
Subject: file_service_type=random fix
X-Git-Tag: fio-1.14~66
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=76579cae25b7e2cdf931f909725665ec45404f2a

file_service_type=random fix

It generated 0..n-1, where we wanted 0..n.

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

diff --git a/io_u.c b/io_u.c
index 0c604dff..9f3bb22d 100644
--- a/io_u.c
+++ b/io_u.c
@@ -335,7 +335,7 @@ static struct fio_file *get_next_file_rand(struct thread_data *td)
 	do {
 		long r = os_random_long(&td->next_file_state);
 
-		fileno = (unsigned int) ((double) (td->open_files - 1) * r / (RAND_MAX + 1.0));
+		fileno = (unsigned int) ((double) (td->open_files * r) / (RAND_MAX + 1.0));
 		f = &td->files[fileno];
 		if (f->fd != -1)
 			return f;