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Now that the SRCU stuff has been removed the entire MR destroy logic can be made a lot simpler. Currently there are many different ways to destroy a MR and it makes it really hard to do this task correctly. Route all destruction through mlx5_ib_dereg_mr() and make it work for all situations. Since it turns out all the different MR types do basically the same thing this removes a lot of knowledge of MR internals from ODP and leaves ODP just exporting an operation to clean up children. This fixes a few weird corner cases bugs and firmly uses the correct ordering of the MR destruction: - Stop parallel access to the mkey via the ODP xarray - Stop DMA - Release the umem - Clean up ODP children - Free/Recycle the MR Link: https://lore.kernel.org/r/20210304120745.1090751-4-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
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