Re: add an API to check if a streamming mapping needs sync calls

[Daniel Borkmann]

On 7/8/20 9:44 AM, Christoph Hellwig wrote:
> On Mon, Jun 29, 2020 at 03:39:01PM +0200, BjÃrn TÃpel wrote:
> > On 2020-06-29 15:03, Christoph Hellwig wrote:
> > > Hi all,
> > >
> > > this series lifts the somewhat hacky checks in the XSK code if a DMA
> > > streaming mapping needs dma_sync_single_for_{device,cpu} calls to the
> > > DMA API.
> >
> > Thanks a lot for working on, and fixing this, Christoph!
> >
> > I took the series for a spin, and there are (obviously) no performance
> > regressions.
> >
> > Would the patches go through the net/bpf trees or somewhere else?
>
> Where did this end up?  I still don't see it in Linus' tree and this
> is getting urgent now.

It was merged into bpf tree and we sent the PR to DaveM which was merged into
net tree around a week ago [0]; I assume the PR for net might go to Linus soon
this week.

  [0] https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=e708e2bd55c921f5bb554fa5837d132a878951cf