On Sat, Jan 22, 2022 at 07:10:42PM +0800, Ming Lei wrote: > Both two functions are used by block core code only, so move the > declaration into private header of block layer. Hmm. Given how much of blk-cgroup.h is private I wonder if moving most of it to block/blk-cgroup.h and just keeping a small public header might be a better idea.