Messages in this thread | | | Date | Sat, 5 Mar 2016 19:18:30 +0700 | Subject | Re: [PATCH RFC 09/22] block, cfq: replace CFQ with the BFQ-v0 I/O scheduler | From | Linus Walleij <> |
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On Sat, Mar 5, 2016 at 12:39 AM, Christoph Hellwig <hch@infradead.org> wrote:
> Btw, can someone explain why you guys waste so much time hacking and > arguing about a legacy codebase (old request code and I/O schedulers) > that everyone would really like to see disappear. Why don't you > spend your time on blk-mq where you have an entirely clean slate > for scheduling?
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.
So: large userbase in all things handheld.
Yours, Linus Walleij
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