On 4/21/21 2:47 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.
Hi Christoph, Ming and Damien, Can one of you take a look at this patch? Thanks, Bart.
