On 2/27/19 5:40 AM, Ming Lei wrote: > Hi, > > The 1st patch introduce bvec_nth_page(), so that nth_page() can > be avoided if the bvec is single-page. > > The 2nd and 3rd patch adds fast path for single-page bvec case. > > The last patch introduces a light-weight helper for iterating over > pages, which may improve __bio_iov_bvec_add_pages(). This patch > is for io_uring. This reclaims another 2%, we're now at 1585K for the test case. Definite improvement! -- Jens Axboe
