On Sat, Oct 08, 2022 at 04:00:10PM +0800, Yu Kuai wrote: > Hi, > > 在 2022/10/08 10:50, kernel test robot 写道: > > Greeting, > > > > FYI, we noticed a -10.6% regression of fio.read_iops due to commit: > > I don't know how this is working but I'm *sure* this commit won't affect Looks it is wrong to move wbt_set_write_cache(q, test_bit(QUEUE_FLAG_WC, &q->queue_flags)); before rq_qos_add() in wbt_init(). Without adding wbt rq_qos, wbt_set_write_cache is just a nop. thanks, Ming
