In the current experimental patches, BFQ is currently at v8. This version has a crash for me (no details, as it hard locks the machine without details). Upgrading to the latest revision v8r2 + r3 patches from git fixes this crash. Can the patch set please be updated?
Definitely planning on attempting to update this this weekend; it's been a while, give me a moment :-)
Tested this weekend and works. Noticed that this is in our linux-patches repo:
Author: Mike Pagano <email@example.com>
Date: Mon Aug 22 10:48:04 2016 -0400
Update for BFQ patchset to v8r2. See bug #591828
This will therefore be in the soon to be committed gentoo-sources-4.7.3.