Re: [PATCH 1/3] block: fast-path for small and simple direct I/O requests

On Mon, Nov 14, 2016 at 01:00:09PM -0700, Jens Axboe wrote: > Prefetches like that tend to grow stale, in my experience. So we should > probably just evaluate the new path cache behavior and see if it makes > sense. Yes. I've tested the patches with that in place, but it didn't make a

Re: [PATCH 1/3] block: fast-path for small and simple direct I/O requests

On Fri, Nov 11, 2016 at 10:11:25PM -0700, Jens Axboe wrote: > From: Christoph Hellwig > > This patch adds a small and simple fast patch for small direct I/O > requests on block devices that don't use AIO. Between the neat > bio_iov_iter_get_pages helper that avoids allocating a