Is btrfs ready to be default fs in F17 ?

[JB]

Alan Cox <alan <at> lxorguk.ukuu.org.uk> writes:

> ...
> Plus in a funny way btrfs is now in part un-needed, With the move to SSD
> devices (which looks like it will speed up rapidly due to the
> catastrophic flooding) the seek and I/O rate problems mostly go away
> for existing fs types.
> ...

But what about those atractive features (some ZFS-like) the users would like to
have, e.g.:
- checksumming
- roll back
- snapshots
- pools

Is it possible to implement them on ext4 ?
Perhaps writing off ext4 in favor of btrfs in context of new features 
development is premature ?

JB