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d57447ffb5
We only need to consider data and metadata dma mapping types separately. The request and bio integrity payload have enough flag bits to internally track the mapping type for each. Use these so the caller doesn't need to track them, and provide separete request and integrity helpers to the common code. This will make it easier to scale new mappings, like the proposed MMIO attribute, without burdening the caller to track such things. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>