Btrfs: cleanup for btrfs_btree_balance_dirty

- 'nr' is no more used.
- btrfs_btree_balance_dirty() and __btrfs_btree_balance_dirty() can share
  a bunch of code.

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

1 files changed, 1 insertions, 3 deletions

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index f21f39f0b1a..7b297354e73 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -952,7 +952,6 @@ int btrfs_defrag_root(struct btrfs_root *root, int cacheonly)
         struct btrfs_fs_info *info = root->fs_info;
         struct btrfs_trans_handle *trans;
         int ret;
-        unsigned long nr;
 
         if (xchg(&root->defrag_running, 1))
                 return 0;
@@ -964,9 +963,8 @@ int btrfs_defrag_root(struct btrfs_root *root, int cacheonly)
 
                 ret = btrfs_defrag_leaves(trans, root, cacheonly);
 
-                nr = trans->blocks_used;
                 btrfs_end_transaction(trans, root);
-                btrfs_btree_balance_dirty(info->tree_root, nr);
+                btrfs_btree_balance_dirty(info->tree_root);
                 cond_resched();
 
                 if (btrfs_fs_closing(root->fs_info) || ret != -EAGAIN)