I just noticed that my device configured with BFQ still shows wbt_lat_usec as configured, despite the fact that BFQ disables WBT in bfq_init_queue [1]: $cat /sys/block/sdc/queue/scheduler mq-deadline [bfq] none $cat /sys/block/sdc/queue/wbt_lat_usec 75000 Is this supposed to be 0 (since it's disabled) or is sysfs confused? Thanks, Holger [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/block/bfq-iosched.c#n7195
