Re: [PATCH][RFC] Linux VM hooks for advanced RDMA NICs

From: Andi Kleen
Date: Wed Apr 27 2005 - 08:51:48 EST

Brice Goglin <Brice.Goglin@xxxxxxxxxxxx> writes:
> I see two drawback in (2).
> First, it requires to play with the list of ioproc_ops when VMA are
> merged or split. Actually, it's not that bad since the list often
> contains only 1 ioproc_ops.

I had a similar problem with the NUMA policies. With some minor hacks
you could probably reuse the policy support by making it a weird kind
of policy. That would allow to keep the fast path impact very low,
which I think is the most important part of such hardware specific
narrow purpose, useless to 99.9999% of all users hacks
(Golden rule number 1 such code: dont impact anything else)

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