"""
We don't merge kernel code just because user space was written by a retarded monkey on crack.
‒ Linus Torvalds
"""
en réponse à Andy Lutomirski (https://lkml.org/lkml/2015/6/23/22) qui explique notamment que:
"""
The current state of uncertainty is problematic, I think. The kdbus
team is spending a lot of time making things compatible with kdbus,
and the latest systemd release makes kdbus userspace support
mandatory. The kernel people who would review it (myself included)
probably don't want to review new versions at a line-by-line level,
because we (myself included) either don't know whether there's any
point or don't think that it should be merged even if the
implementation were flawless.
"""
Les dernières versions de systemd dépendent de kdbus, donc ils mettent la pression sur Linus pour accepter kdbus dans linux.

Popcorn time. Stay tuned.

EDIT: pour rappel tout comme systemd, dbus est l'oeuvre de Lennart.