[PATCH -next] btrfs: remove unused variable

[Zou Wei]

Fix variable set but not used compilation warnings:

fs/btrfs/ctree.c:1581:6: warning: variable ‘parent_level’ set but not used [-Wunused-but-set-variable]
  int parent_level;
      ^~~~~~~~~~~~

fs/btrfs/zoned.c:503:6: warning: variable ‘zone_size’ set but not used [-Wunused-but-set-variable]
  u64 zone_size;
      ^~~~~~~~~

Signed-off-by: Zou Wei <zou_wei@xxxxxxxxxx>
---
 fs/btrfs/ctree.c | 3 ---
 fs/btrfs/zoned.c | 2 --
 2 files changed, 5 deletions(-)

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 32a57a7..e5a0941 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1578,13 +1578,10 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
 	int end_slot;
 	int i;
 	int err = 0;
-	int parent_level;
 	u32 blocksize;
 	int progress_passed = 0;
 	struct btrfs_disk_key disk_key;
 
-	parent_level = btrfs_header_level(parent);
-
 	WARN_ON(trans->transaction != fs_info->running_transaction);
 	WARN_ON(trans->transid != fs_info->generation);
 
diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index fa9cc61..742f088 100644
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -500,7 +500,6 @@ int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
 	unsigned int zone_sectors;
 	u32 sb_zone;
 	int ret;
-	u64 zone_size;
 	u8 zone_sectors_shift;
 	sector_t nr_sectors = bdev->bd_part->nr_sects;
 	u32 nr_zones;
@@ -515,7 +514,6 @@ int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
 	zone_sectors = bdev_zone_sectors(bdev);
 	if (!is_power_of_2(zone_sectors))
 		return -EINVAL;
-	zone_size = zone_sectors << SECTOR_SHIFT;
 	zone_sectors_shift = ilog2(zone_sectors);
 	nr_zones = nr_sectors >> zone_sectors_shift;
 
-- 
2.6.2