On Thu, Dec 17, 2020 at 8:19 AM Jens Axboe <axboe@xxxxxxxxx> wrote:
> [..]
> which shows a failed nonblock lookup, then punt to worker, and then we
> complete with fd == 4. This takes 65 usec in total. Re-running the same
> test case again:
> [..]
> shows the same request completing inline, also returning fd == 4. This
> takes 6 usec.
I think this example needs to be part of the git history - either move
it into the individual commits, or we just need to make sure it
doesn't get lost as a cover letter and ends up part of the merge
message.
Despite having seen the patch series so many times now, I'm still just
really impressed by how small and neat it is, considering the above
numbers, and considering just how problematic this case was
historically (ie I remember all the discussions we had about
nonblocking opens back in the days).
So I continue to go "this is the RightWay(tm)" just from that.
Linus
