On 5/3/21 2:52 AM, Changheun Lee wrote: > bio size can grow up to 4GB when muli-page bvec is enabled. > but sometimes it would lead to inefficient behaviors. > in case of large chunk direct I/O, - 32MB chunk read in user space - > all pages for 32MB would be merged to a bio structure if the pages > physical addresses are contiguous. it makes some delay to submit > until merge complete. bio max size should be limited to a proper size. Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>
