On Wed, Jul 16, 2025 at 08:10:33PM +0800, Coly Li wrote: > Just like hanlding discard requests, handling raid5 read/write bios should > try to split the large bio into opt_io_size aligned both *offset* and > *length*. If I understand correctly, bio_split_to_limits() doesn't handle > offset alignment for read5 read/write bios. Well, if you want offset alignment, set chunk_sectors.