On Mon, Apr 21, 2025 at 08:22:53PM +0800, Zizhi Wo wrote: > > > > But I also don't understand what "level" even means here. > > > > The first "level" refers to the granularity of the tg; this flag needs > to be cleared when bio moving up to the upper-level tg, for example: > tg_dispatch_one_bio->throtl_add_bio_tg. > > The second "level" refers to the fact that throttle and rq_qos are not > on the same layer, so reuse this flag. So the flag is only set while the bio is queued up in the throttling lists, and it can't be in rq_qos lists at the same time?
