On Mon, Dec 17, 2018 at 09:34:55PM -0700, Jens Axboe wrote: > On 12/17/18 9:15 PM, Ming Lei wrote: > > The queue mapping of type poll only exists when > > set->map[HCTX_TYPE_POLL].nr_queues > > is bigger than zero, so enhance the constraint by checking .nr_queues of > > type poll > > before enabling IO poll. > > > > Otherwise IO race & timeout can be observed when running block/007. > > Looks good to me, but we might consider having a helper for this, since > we have this check in 3 places now. But for now this is good, thanks > Ming.
Jens, if you want this I can drop the nvme patch to set nr_maps to 2 as it wouldn't be needed. Not sure which one is more elegant, but I guess Mings version is a little more fool proof.
