On Mon, Oct 15, 2018 at 4:32 PM Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx> wrote: > On 15.10.2018 16:10, Linus Walleij wrote: > > + /* > > + * Zoned devices must use a deadline scheduler because currently > > + * that is the only scheduler respecting zoned writes. > > + */ > > + if (blk_queue_is_zoned(q)) > > + policy = "mq-deadline"; > > + else if (IS_ENABLED(CONFIG_IOSCHED_BFQ)) > > + policy = "bfq"; > > + else > > + policy = "mq-deadline"; > > If more rules will be needed in the future, shall we just add extra ifs, > or it would be better to craft some struct/table now + policy search > helper? Let's do it when it happens. Premature optimization is the root of all evil ;) Yours, Linus Walleij
