On Fri, Mar 22, 2024 at 07:46:17PM +0200, Leon Romanovsky wrote: > > As far as I can tell it totally misses the point. Which is not to never > > return non-P2P if the flag is set, but to return either all P2P or non-P2 > > P and not create a boundary in the single call. > > You are treating FOLL_PCI_P2PDMA as a hint, but in iov_iter_extract_user_pages() > you set it only for p2p queues. I was under impression that you want only p2p pages > in these queues. FOLL_PCI_P2PDMA is an indicator that the caller can cope with P2P pages. Most callers simply can't.
