Btrfs: Use a chunk of the key flags to record the item type.

Add (untested and simple) directory item code
Fix comp_keys to use the new key ordering
Add btrfs_insert_empty_item

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

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 03aa7c2c6336..a24b47274037 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -27,7 +27,7 @@ int btrfs_find_last_root(struct btrfs_root *root, u64 objectid,
         l = &path.nodes[0]->leaf;
         BUG_ON(path.slots[0] == 0);
         slot = path.slots[0] - 1;
-        if (btrfs_key_objectid(&l->items[slot].key) != objectid) {
+        if (btrfs_disk_key_objectid(&l->items[slot].key) != objectid) {
                 ret = 1;
                 goto out;
         }