Re: [PATCH V2 12/12] block: use standard blktrace API to output cgroup info for debug notes

Hi Shaohua, [auto build test ERROR on linus/master] [also build test ERROR on v4.12-rc5] [cannot apply to driver-core/driver-core-testing block/for-next next-20170615] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url:

[PATCH V2 12/12] block: use standard blktrace API to output cgroup info for debug notes

From: Shaohua Li Currently cfq/bfq/blk-throttle output cgroup info in trace in their own way. Now we have standard blktrace API for this, so convert them to use it. Note, this changes the behavior a little bit. cgroup info isn't output by default, we only do this with 'blk_cgroup'