Hello, Glauber. On Wed, Sep 12, 2012 at 01:56:09PM +0400, Glauber Costa wrote: > "Being able to provide hierarchical support" is an example of such > restrictions. And as Vivek said himself, for the CFQ case should be doable.
Yeah, it's mostly that cfq was already a hairy monster before blkcg was added to it and unfortunately we didn't make it any cleaner in the process and blkcg itself has a lot of other issues including being completely broken w.r.t. writeback writes. In addition there are two sub-controllers - the cfq one and blk-throttle. So, it's just that there are too many scary things to do and not enough man power or maybe interest. I hope we could just declare cgroup isn't supported on block devices but that doesn't seem feasible at this point either. I might / probably work on it and am hoping to coerce Vivek into it too. If you wanna jump in, please be my guest. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
