Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller

[Parav Pandit]

Hi Christoph,

On Tue, Apr 5, 2016 at 2:06 AM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
> On Mon, Apr 04, 2016 at 09:25:04PM -0400, Tejun Heo wrote:
>> Is it actually customary to have rdma core module updated more
>> frequently separate from the kernel?  Out-of-tree modules being
>> updated separately happens quite a bit but this is an in-kernel
>> module, which usually is tightly coupled with the rest of the kernel.
>
> People do it for all the wrong reasons - OFED and organization of morons
> wants people to use their modules, which causes lots of harm.  Anything
> that makes this harder is a good thing.
>
I am not really trying to address OFED issues here. I am sure you
understand that if ib_core.ko kernel module is in-kernel module than,
for all the fixes/enhancements that goes to it would require people to
upgrade to newer kernel, instead of just modules upgrade. Such heavy
weight upgrade slows down the adoption which i am trying to avoid here
by placing knobs in right kernel module's hand.
Its like making ib_core.ko from module to in kernel component, if I
understand correctly nobody wants to do that.