blk-mq: introduce blk_map_iter#83
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Create a type that fully captures the lower level physical address iteration. Signed-off-by: Keith Busch <[email protected]>
This will make it easier to add different sources of the bvec table, like for upcoming integrity support, rather than assume to use the bio's bi_io_vec. It also makes iterating "special" payloads more in common with iterating normal payloads. Signed-off-by: Keith Busch <[email protected]>
In preparing for integrity dma mappings, we can't rely on the request flag because data and metadata may have different mapping types. Signed-off-by: Keith Busch <[email protected]>
It's not serving any particular purpose. pci_p2pdma_state() already has all the appropriate checks, so the config and flag checks are not guarding anything. Signed-off-by: Keith Busch <[email protected]>
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In preparing for dma mapping integrity metadata, move the common dma setup to a helper. Signed-off-by: Keith Busch <[email protected]>
Provide integrity metadata helpers equivalent to the data payload helpers for iterating a request for dma setup. Signed-off-by: Keith Busch <[email protected]>
This can be reused by metadata sgls once that starts using the blk-mq dma api. Signed-off-by: Keith Busch <[email protected]>
Aligns data and metadata to the similar dma mapping scheme and removes one more user of the scatter-gather dma mapping. Signed-off-by: Keith Busch <[email protected]>
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Pull request for series with
subject: blk-mq: introduce blk_map_iter
version: 1
url: https://patchwork.kernel.org/project/linux-block/list/?series=987400