Btrfs: cleanup dead code of defragment

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

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index cbaa73c..76928ca 100644 (file)
--- 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))