On 4/28/25 17:22, Leon Romanovsky wrote:
From: Christoph Hellwig<hch@xxxxxx> The current scheme with a single helper to determine the P2P status and map a scatterlist segment force users to always use the map_sg helper to DMA map, which we're trying to get away from because they are very cache inefficient. Refactor the code so that there is a single helper that checks the P2P state for a page, including the result that it is not a P2P page to simplify the callers, and a second one to perform the address translation for a bus mapped P2P transfer that does not depend on the scatterlist structure. Signed-off-by: Christoph Hellwig<hch@xxxxxx> Reviewed-by: Logan Gunthorpe<logang@xxxxxxxxxxxx> Acked-by: Bjorn Helgaas<bhelgaas@xxxxxxxxxx> Tested-by: Jens Axboe<axboe@xxxxxxxxx> Reviewed-by: Luis Chamberlain<mcgrof@xxxxxxxxxx> Signed-off-by: Leon Romanovsky<leonro@xxxxxxxxxx>
Reviewed-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
