From: Andrzej Jakowski <andrzej.jakowski@intel.com>
Date: Wed, 11 Oct 2017 22:26:00 +0000 (-0600)
Subject: Fix overflow in percentile calculation for Windows
X-Git-Tag: fio-3.2~31
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=447b94e10bddab8078f35c423ca1e3c3f0b1be38;ds=sidebyside

Fix overflow in percentile calculation for Windows

This patch fixes percentile calculation for Windows where overflow
on 32 bit type happened while calculating actual percentiles.

Signed-off-by: Andrzej Jakowski <andrzej.jakowski@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/stat.c b/stat.c
index c5a68ad5..5c758680 100644
--- a/stat.c
+++ b/stat.c
@@ -139,7 +139,7 @@ unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
 				   fio_fp64_t *plist, unsigned long long **output,
 				   unsigned long long *maxv, unsigned long long *minv)
 {
-	unsigned long sum = 0;
+	unsigned long long sum = 0;
 	unsigned int len, i, j = 0;
 	unsigned int oval_len = 0;
 	unsigned long long *ovals = NULL;