On Tue, Aug 26, 2025 at 09:08:33AM +0800, Yu Kuai wrote: > 在 2025/08/25 18:57, Christoph Hellwig 写道: > > On Mon, Aug 25, 2025 at 05:36:55PM +0800, Yu Kuai wrote: > > > + bio = bio_submit_split(bio, > > > + zone->zone_end - bio->bi_iter.bi_sector, > > > + &mddev->bio_set); > > > > Do you know why raid0 and linear use mddev->bio_set for splitting > > instead of their own split bio_sets like raid1/10/5? Is this safe? > > > > I think it's not safe, as mddev->bio_split pool size is just 2, reuse > this pool to split multiple times before submitting will need greate > pool size to make this work. > > By the way, do you think it's better to increate disk->bio_split pool > size to 4 and convert all mdraid internal split to use disk->bio_split > directly? I don't really know where that magic number 4 or even the current number comes from, but I think Jens might be amenable to a small increase with a good explanation.
