On 8/17/23 07:41, kernel test robot wrote:
[ 222.622837][ T2216] statistics for priority 1: i 276 m 0 d 276 c 278 [ 222.629307][ T2216] WARNING: CPU: 0 PID: 2216 at block/mq-deadline.c:680 dd_exit_sched (block/mq-deadline.c:680 (discriminator 3))
The above information shows that dd_inserted_request() has been called 276 times and also that dd_finish_request() has been called 278 times. Calling dd_finish_request() more than once per request breaks the code for priority handling since that code checks how many requests are pending per priority level by subtracting the number of completion calls from the number of insertion calls (see also dd_queued()). I think the above output indicates that this patch introduced a regression. Bart.
