[PATCH for-4.5 03/13] NVMe: Allow request merges

[Sagi Grimberg]

> It is generally more efficient to submit larger IO.
>
> Signed-off-by: Keith Busch <keith.busch at intel.com>

Oh yes, I wanted that for some time now, ever since Jens
and I addressed some issues with front merges and gaps which
detected by iser (I had this patch in my pipe but didn't have time to
test...)

Reviewed-by: Sagi Grimberg <sagig at mellanox.com>