Hi Jens, the first patch in this series is Tejun's patch for making BFQ disable io.cost. The second patch makes BFQ present both the bfq-prefixes parameters and non-prefixed parameters, as suggested by Tejun [1]. In the first patch I've tried to use macros not to repeat code twice. checkpatch complains that these macros should be enclosed in parentheses. I don't see how to do it. I'm willing to switch to any better solution. Thanks, Paolo [1] https://lkml.org/lkml/2019/9/18/736 Paolo Valente (1): block, bfq: present a double cgroups interface Tejun Heo (1): blkcg: Make bfq disable iocost when enabled Documentation/admin-guide/cgroup-v2.rst | 8 +- Documentation/block/bfq-iosched.rst | 40 ++-- block/bfq-cgroup.c | 260 ++++++++++++------------ block/bfq-iosched.c | 32 +++ block/blk-iocost.c | 5 +- include/linux/blk-cgroup.h | 5 + kernel/cgroup/cgroup.c | 2 + 7 files changed, 201 insertions(+), 151 deletions(-) -- 2.20.1