Re: [PATCHv12 1/3] rdmacg: Added rdma cgroup controller

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On Wed, Sep 07, 2016 at 11:51:42AM +0300, Matan Barak wrote:
> All recent proposals of the new ABI schema deals with extending the 
> flexibility of the current schema by letting drivers define their specific 
> types, actions, attributes, etc. Even more than that, the dispatching 
> starts from the driver and it chooses if it wants to use the common RDMA 
> core layer or have it's own wise implementation instead.
> Some drivers might even prefer not to implement the current verbs types.
> These decisions were made in the OFVWG meetings.

OFVWG meetings have absolutely zero relevance for Linux development.
More "flexibility" for drivers just means giving up on designing a
coherent API and leaving it to drivers authors to add crap to their
own drivers.  That's a major step backwards.

> Sounds reasonable, but what about drivers which ignore the common code and 
> implement it in their own way? What about drivers which don't support the 
> standard RDMA types at all?

They should not be using the code in drivers/infiniband.  usnic is such
an example of a driver that should never have been added in it's current
form.
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