Jens Axboe <axboe@xxxxxxxxx> writes: > On 9/11/18 10:03 AM, Takashi Iwai wrote: >> Hi, >> >> I noticed that bfq doesn't appear in the I/O scheduler list on >> 4.19-rc3. It seems that blkcg_policy_register() at the beginning of >> bfq_init() returns -ENOSPC, hence the probe aborts silently. >> >> Is this already addressed? > > Haven't heard about this one before. What kernel did you last use that > worked? I'm guessing you just need to update the maximum number of policies: /* * Maximum number of blkcg policies allowed to be registered concurrently. * Defined here to simplify include dependency. */ #define BLKCG_MAX_POLS 3 -Jeff
