[openib-general] [PATCH] Convert idr's internal locking to _irqsave variant

[Roland Dreier]

    Arjan> it does get harder if this is needed for your IB device to
    Arjan> do more work, so that your swap device on your IB can take
    Arjan> more IO's to free up ram..

That's the classic problem, but it's more a matter of the consumer
using GFP_NOIO in the right places.

 - R.