RDMA/rdmavt: Adapt to handle non-uniform sizes on umem SGEs

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rdmavt expects a uniform size on all umem SGEs which is currently at
PAGE_SIZE.

Adapt to a umem API change which could return non-uniform sized SGEs due
to combining contiguous PAGE_SIZE regions into an SGE. Use
for_each_sg_page variant to unfold the larger SGEs into a list of
PAGE_SIZE elements.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

...

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Shiraz, Saleem 2019-02-12 10:52:24 -06:00 • committed by Jason Gunthorpe

parent e8ac9389f0

commit 36d577089d

1 changed files with 8 additions and 10 deletions

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drivers/infiniband/sw/rdmavt/mr.c

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