On Thu, May 06, 2021 at 05:57:02PM +0100, Pavel Begunkov wrote: > On 4/30/21 3:35 PM, Al Viro wrote: > > On Fri, Apr 30, 2021 at 01:57:22PM +0100, Pavel Begunkov wrote: > >> On 4/28/21 7:16 AM, yangerkun wrote: > >>> Hi, > >>> > >>> Should we pick this patch for 5.13? > >> > >> Looks ok to me > > > > Looks sane. BTW, Pavel, could you go over #untested.iov_iter > > and give it some beating? Ideally - with per-commit profiling to see > > what speedups/slowdowns do they come with... > > I've heard Jens already tested it out. Jens, is that right? Can you > share? especially since you have much more fitting hardware. FWIW, the current branch is #untested.iov_iter-3 and the code generated by it at least _looks_ better than with mainline; how much of an improvement does it make would have to be found by profiling...