[PATCH] Btrfs: cleanup dead code of defragment

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@is_extent is no more needed since we don't defrag extent root.

Signed-off-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
---
 fs/btrfs/tree-defrag.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index 94e05c1..e6d992e 100644
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -37,7 +37,6 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
 	int ret = 0;
 	int wret;
 	int level;
-	int is_extent = 0;
 	int next_key_ret = 0;
 	u64 last_ret = 0;
 	u64 min_trans = 0;
@@ -50,7 +49,7 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
 		goto out;
 	}
 
-	if (root->ref_cows == 0 && !is_extent)
+	if (root->ref_cows == 0)
 		goto out;
 
 	if (btrfs_test_opt(root, SSD))
-- 
1.8.1.4

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