Hi Jens, this patch fixes bug 214503 [1]. Commit 2d52c58b9c9b ("block, bfq: honor already-setup queue merges") has not to do with this bug, and can be restored. Thanks, Paolo Paolo Valente (1): block, bfq: reset last_bfqq_created on group change block/bfq-cgroup.c | 6 ++++++ 1 file changed, 6 insertions(+) -- 2.20.1