On Tue, Jan 26, 2021 at 11:57:48AM +0800, Ming Lei wrote: > > *same_page = false; > > return false; > > } > > So far we don't need bio->bi_disk or bio->bi_bdev(will be changed in > Christoph's patch) during adding page to bio, so there is null ptr > refereance risk. I've started resurrecting my old plan to always have a valid device in the bio from allocation time on. It is pretty invasive, but probably worth it. Sending out the first prep series right now, the actual changes should be ready for an RFC later this week.
