[PATCH][next] btrfs: scrub: remove redundant division of stripe_nr

[Colin Ian King <colin.i.king@gmail.com>]

Variable stripe_nr is being divided by map->num_stripes however the
result is never read. The division and assignment are redundant and
can be removed. Cleans up clang scan build warning:

fs/btrfs/scrub.c:1264:3: warning: Value stored to 'stripe_nr' is
never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
---
 fs/btrfs/scrub.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 2c7fdbb60314..8fc4f9ea3d20 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -1261,7 +1261,6 @@ static int get_raid56_logic_offset(u64 physical, int num,
 
 		/* Work out the disk rotation on this stripe-set */
 		rot = stripe_nr % map->num_stripes;
-		stripe_nr /= map->num_stripes;
 		/* calculate which stripe this data locates */
 		rot += i;
 		stripe_index = rot % map->num_stripes;
-- 
2.39.2