On Wed, Apr 17, 2024 at 09:09:07AM +0800, Yu Kuai <yukuai1@xxxxxxxxxxxxxxx> wrote: > Yes, bfq already support that, I've never noticed CONFIG_IOSCHED_BFQ is a tristate that explains (me) a lot. Thanks! > First of all, users can only load these policies when they need, and > reduce kernel size; Then, when these policies is not loaded, IO fast > path will be slightly shorter, and save some memory overhead for each > disk. ...and there is no new complexity thanks to the above. (I'm only catching up with subthread of patch 5/6.) It seems the old complexity could be simplified by the way of lazy inits. Intereseting... Michal
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