btrfs: Code cleanup

Attaching below is some of the code cleanups that i came across while
reading the code.

a) alloc_path already calls init_path.
b) Mention that btrfs_inode is the in memory copy.Ext4 have ext4_inode_info as
the in memory copy ext4_inode as the disk copy

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

1 files changed, 0 insertions, 1 deletions

diff --git a/fs/btrfs/inode-item.c b/fs/btrfs/inode-item.c
index 449e9dbdf957..e8b5a9f7c0c2 100644
--- a/fs/btrfs/inode-item.c
+++ b/fs/btrfs/inode-item.c
@@ -35,7 +35,6 @@ int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root
 
         path = btrfs_alloc_path();
         BUG_ON(!path);
-        btrfs_init_path(path);
         ret = btrfs_insert_item(trans, root, &key, inode_item,
                                 sizeof(*inode_item));
         btrfs_release_path(root, path);