File systems

[toredhiddenuser at tormail.org]

Recently saw a news about ext2 being implemented in BSD license. Does that
include support the ext3 and ext4 filesystems or will they be implemented?
ref: http://www.freebsd.org/doc/handbook/filesystems-linux.html

Is there any way to shrink the ever-growing ZFS or UFS2 systems? Or will
it be implemented in UFS3? Any ideas without re-dumping the entire file
system using ufsdump?

Thank You