On Thu, Oct 31, 2024 at 10:21:13AM +0100, Christoph Hellwig wrote: > On Thu, Oct 31, 2024 at 11:05:30AM +0200, Leon Romanovsky wrote: > > This series is a subset of the series you tested and doesn't include the > > block layer changes which most likely were the cause of the performance > > regression. > > > > This is why I separated the block layer changes from the rest of the series > > and marked them as RFC. > > > > The current patch set is viable for HMM and VFIO. Can you please retest > > only this series and leave the block layer changes for later till Christoph > > finds the answer for the performance regression? > > As the subset doesn't touch block code or code called by block I don't > think we need Jens to benchmark it, unless he really wants to. He wrote this sentence in his email, while responding on subset which doesn't change anything in block layer: "just want to make sure something like this doesn't get merged until that is both fully understood and sorted out." This series works like a charm for RDMA (HMM) and VFIO. Thanks