From: ljzhang,Yaxin Hu,Jianchao Tang <nonggia@sjtu.edu.cn>
Date: Fri, 27 Jul 2007 13:54:10 +0000 (+0200)
Subject: [PATCH] Fix file_size_high
X-Git-Tag: fio-1.17~34
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=d11a531f38b9b612dfb3bd09c89d011dc786f81d;ds=sidebyside

[PATCH] Fix file_size_high

It is generating a size between

[file_size_low, file_size_low+file_size_high]

where it should be

[file_size_low, file_size_high].

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

diff --git a/filesetup.c b/filesetup.c
index b8b22b5a..58c5015c 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -104,7 +104,7 @@ static unsigned long long get_rand_file_size(struct thread_data *td)
 	long r;
 
 	r = os_random_long(&td->file_size_state);
-	ret = td->o.file_size_low + (unsigned long long) ((double) td->o.file_size_high * (r / (RAND_MAX + 1.0)));
+	ret = td->o.file_size_low + (unsigned long long) ((double) (td->o.file_size_high - td->o.file_size_low) * (r / (RAND_MAX + 1.0)));
 	ret -= (ret % td->o.rw_min_bs);
 	return ret;
 }