This addresses the comment by Lennart https://github.com/systemd/systemd/pull/22662#discussion_r829799863: > /sys/subsystem is preparation for a future that never came. > And given that the main proponent of this left Linux kernel > development (Kay), I doubt this will ever come. So maybe we > should start dropping references to /sys/subsystem/ given it's > unlikely to materialize anytime soon.
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