The post where he offered to step up as md maintainer: https://lkml.org/lkml/2016/1/4/455 and discussion about the change: http://www.linux-magazine.com/Issues/2016/186/Kernel-News
A very brief bio: https://raid.wiki.kernel.org/index.php/User:Shaohua_Li
Patches to Linux kernel while at Facebook: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/lin...