Btrfs has been deprecated?

Posted Aug 2, 2017 9:50 UTC (Wed) by danieldk (subscriber, #27876)
In reply to: Btrfs has been deprecated? by jhoblitt
Parent article: Red Hat Enterprise Linux 7.4 released

And AFAIK they are adding support for CoW:

Posted Aug 2, 2017 20:53 UTC (Wed) by nix (subscriber, #2304) [Link]

reflinking via CoW's been working well for a while now, since 4.9 or thereabouts.