On 03/11/2016 01:17 PM, Christoph Hellwig wrote: > On Sat, Mar 05, 2016 at 07:18:30PM +0700, Linus Walleij wrote: >> Depends on what time horizon and target I'd say. Paolo was in contact with >> the MMC/SD subsystem maintainer Ulf Hansson. (e)MMC/SD are both >> synchronous command-response-based protocols, and as of today >> single-channel. So everone's smartphone and tablet etc are today >> single-channel. I don't know if there is even a protocol change coming >> to augment this, the only duct-tapeish solution I've heard about is >> command queueing which is basically a kind of pipelining of requests. > > We use blkj-mq for single queue devices as well, in fact most consumers > are single queue. MMC is a prime candidate that hould move over soon. Out of curiosity - would it make sense to have something like BFQ/CFQ for single-queue blk-mq users? -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
