[ewg] [PATCH] ib_core: save process's virtual address in struct ib_umem

[Roland Dreier]

 > add "address" field to struct ib_umem so low level drivers will have this
 > information which may be needed in order to correctly calculate the number of
 > huge pages.

seems like a really strange thing to do:

+	umem->address	= addr;

this value addr is coming from the low-level driver, so I'm not clear
why we need to stick it into umem?  What am I missing?

 - R.