[openib-general] [PATCH untested] IB/mthca: avoid wasting MTT enties on memfree

[Roland Dreier]

Have you tested this?  I think it increases the amount of memory
needed for the buddy allocator bitmaps by a factor of 8, and right now
those bitmaps are kmalloc()ed.  So I'd be aftraid that it would make
it impossible to load the module.

Anyway this is definitely 2.6.21 material given that we're already at
2.6.20-rc4, and this change is has a decent chance of introducing regressions.

 - R.