Btrfs: Enable btree balancing on old kernels again

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 373374340e9b..d8a256d3c83a 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1719,7 +1719,6 @@ void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
          * looks as though older kernels can get into trouble with
          * this code, they end up stuck in balance_dirty_pages forever
          */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
         struct extent_io_tree *tree;
         u64 num_dirty;
         u64 start = 0;
@@ -1735,9 +1734,7 @@ void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
                 balance_dirty_pages_ratelimited_nr(
                                    root->fs_info->btree_inode->i_mapping, 1);
         }
-#else
         return;
-#endif
 }
 
 void btrfs_set_buffer_defrag(struct extent_buffer *buf)