On Tue, Sep 22, 2020 at 11:39:57AM +0300, Leon Romanovsky wrote: > E.g. with the Infiniband driver that allocates a single page for hold > the > pages. For 1TB memory registration, the temporary buffer would consume > only > 4KB, instead of 2GB. Formatting looks little weird here. Otherwise looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>