Btrfs: directory inode index is back

Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/TODO b/fs/btrfs/TODO
index 1c3acfc..8d7e5a3 100644
--- a/fs/btrfs/TODO
+++ b/fs/btrfs/TODO
@@ -1,12 +1,12 @@
 * cleanup, add more error checking, get rid of BUG_ONs
 * Fix ENOSPC handling
-* Add block mapping tree (simple dm layer)
 * Make allocator smarter
 * add a block group to struct inode
-* Make sure nobh stuff is working properly for cows
 * Do actual block accounting
 * Check compat and incompat flags on the inode
 * Get rid of struct ctree_path, limiting tree levels held at one time
+* Add generation number to key pointer in nodes
+* Add parent pointer back to extent map.
 * Release
 * Do real tree locking
 * Add extent mirroring (backup copies of blocks)