[manchmalscott]

What is the benefit to the wider Linux ecosystem to upstream what looks to be a very android specific component?

[duskwuff]

It's already in the kernel. This is a rewrite of an existing component (drivers/android/binder.c).

[kimixa]

Because a single community is a greater whole? There's other things in the kernel that Android-focused developers work on, and forcing them to a fork raises the barrier to merge their work into the mainline.