From: Damien Le Moal <damien.lemoal@wdc.com>
Date: Wed, 29 Aug 2018 01:29:02 +0000 (+0900)
Subject: zbd: Fix zbd_zone_idx()
X-Git-Tag: fio-3.9~1^2~1
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=cd775e06bb369a23b9c7aab259127f38e8027ca5

zbd: Fix zbd_zone_idx()

For a zone size that is not a power of 2 number of sectors,
f->zbd_info->zone_size_log2 is set to -1. So use bit shift in
zbd_zone_idx() only if zone_size_log2 is not negative.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
---

diff --git a/zbd.c b/zbd.c
index 93f14410..eb474f6e 100644
--- a/zbd.c
+++ b/zbd.c
@@ -31,7 +31,7 @@ static uint32_t zbd_zone_idx(const struct fio_file *f, uint64_t offset)
 {
 	uint32_t zone_idx;
 
-	if (f->zbd_info->zone_size_log2)
+	if (f->zbd_info->zone_size_log2 > 0)
 		zone_idx = offset >> f->zbd_info->zone_size_log2;
 	else
 		zone_idx = (offset >> 9) / f->zbd_info->zone_size;