[openib-general] ib_unmap_fmr

[Sean Hefty]

The current API for ib_unmap_fmr takes an array.  A couple of questions:  Is it worth it for ib_unmap_fmr to operate on more than a single fmr?  If so, should a linked list be used instead?  And, should the access layer API assume that the FMRs all come from the same device?

My initial thought is to restrict ib_unmap_fmr to a single fmr, _but_ if there's a reason to unmap multiples, update struct ib_fmr to allow for a linked list.  The access layer would assume all FMRs come from the same device in such a case, to avoid walking the list.

- Sean

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