On Thu, Feb 10, 2022 at 07:56:37PM +0800, Yu Kuai wrote: > Throttled bios can't be issued after del_gendisk() is done, thus > it's better to cancel them immediately rather than waiting for > throttle is done. > > For example, if user thread is throttled with low bps while it's > issuing large io, and the device is deleted. The user thread will > wait for a long time for io to return. FYI, this crashed left rigt and center when running xfstests with traces pointing to throtl_pending_timer_fn.
