Hello, On Mon, Jul 15, 2024 at 07:15:24AM +0000, Boy Wu (吳勃誼) wrote: > I think I get your idea. You want to replace all the u64 sync for > iostat. However, I have one question: why use blkg_stat_lock instead of > adding a spin lock for each iostat like iostat.spinlock? We don't need > to lock between updating different iostats, but only lock when updating > the same iostat. Oh yeah, that'd be even better. Thanks. -- tejun