On 19/10/18 15:36, Bryan Gurney wrote: > I like this idea. I don't have enough experience to write this patch > myself, but I imagine something like adding "bool is_zoned_aware" to > "struct elevator_type", and setting that true only for the schedulers > that are currently zoned-device aware (which is currently deadline on > single queue, mq-deadline on blk-mq). I don't think this is needed currently as a) Jens is working on getting rid of the legacy path, which leaves us with mq-deadline only and Linus' patch has: + if (blk_queue_is_zoned(q)) + policy = "mq-deadline"; Which chooses mq-deadline on a zoned device. So nothing to worry about here now. All this only given Linus' patch actually gets merged. Byte, Johannes -- Johannes Thumshirn SUSE Labs jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850
