[PATCH v2 3/5] zbd: use a helper to calculate zone index

[Dmitry Fomichev <dmitry.fomichev@wdc.com>]

zone_lock() function contains the debug code to verify that the zone
being locked belongs to the job's working zone range. Clean up this
code by using a previously defined helper for calculating the zone
index to check.

Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
---
 zbd.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/zbd.c b/zbd.c
index 7577472e..37417660 100644
--- a/zbd.c
+++ b/zbd.c
@@ -104,8 +104,7 @@ static void zone_lock(struct thread_data *td, const struct fio_file *f,
 		      struct fio_zone_info *z)
 {
 #ifndef NDEBUG
-	struct zoned_block_device_info *zbd = f->zbd_info;
-	uint32_t const nz = z - zbd->zone_info;
+	unsigned int const nz = zbd_zone_idx(f, z);
 	/* A thread should never lock zones outside its working area. */
 	assert(f->min_zone <= nz && nz < f->max_zone);
 	assert(z->has_wp);
-- 
2.37.3