Re: [RFC 0/2] nocopy bvec for direct IO

[Christoph Hellwig]

On Wed, Dec 09, 2020 at 02:19:50AM +0000, Pavel Begunkov wrote:
> A benchmark got me 430KIOPS vs 540KIOPS, or +25% on bare metal. And perf
> shows that bio_iov_iter_get_pages() was taking ~20%. The test is pretty
> silly, but still imposing. I'll redo it closer to reality for next
> iteration, anyway need to double check some cases.

That is pretty impressive.  But I only got this cover letter, not the
actual patches..