[PATCH] IB/mthca: encapsulate MTT buddy allocator
Encapsulate the buddy allocator used for MTT segments. This cleans up the code and also gets us ready to add FMR support. Signed-off-by: NMichael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: NRoland Dreier <roland@topspin.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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