Hello, On Tue, Nov 22, 2016 at 03:08:36PM -0800, Shaohua Li wrote: > Yep, the limit could be high or max. It's doable moving the restrictions on > input, but will increase trouble using the limits. If high is bigger than max, > can I set high to max? if not, I'd prefer to keep the restrictions. You can do that internally but userland should keep seeing what it configured. > > I haven't read the whole thing yet but this looks a bit suspicious. A > > css going offline indicates that the destruction of the css started. > > I don't get why that'd reset high limits. There can be a lot of async > > IOs after offline. > > Ok. We do want to reset the limits. Because if no cgroup has high limit, we > definitively should use max limit for all cgroups. The whole state machine > (switching between high and max limit) is meaningless in that case. > > Is pd_free_fn a good place to guarantee anyc IOs finish? Yeap. Thanks. -- tejun -- 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