RDMA/core: Add weak ordering dma attr to dma mapping

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For memory regions registered with IB_ACCESS_RELAXED_ORDERING will be dma
mapped with the DMA_ATTR_WEAK_ORDERING.

This will allow reads and writes to the mapping to be weakly ordered, such
change can enhance performance on some supporting architectures.

Link: https://lore.kernel.org/r/20200212073559.684139-1-leon@kernel.org
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

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Michael Guralnik 2020-02-12 09:35:59 +02:00 • committed by Jason Gunthorpe

parent ca750d4a9c

commit f03d9fadfe

1 changed files with 7 additions and 4 deletions

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drivers/infiniband/core/umem.c

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