RE: [for-next 1/2] xprtrdma: take reference of rdma provider module

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> -----Original Message-----
> From: Steve Wise [mailto:swise@xxxxxxxxxxxxxxxxxxxxx]
> Sent: Friday, July 18, 2014 6:58 PM
> To: Devesh Sharma; 'Chuck Lever'
> Cc: 'Hefty, Sean'; 'Shirley Ma'; 'Roland Dreier'; linux-rdma@xxxxxxxxxxxxxxx
> Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider
> module
> 
> > > > We can't really deal with a CM_DEVICE_REMOVE event while there are
> > > > active NFS mounts.
> > > >
> > > > System shutdown ordering should guarantee (one would hope) that
> > > > NFS mount points are unmounted before the RDMA/IB core
> > > > infrastructure is torn down. Ordering shouldn't matter as long all
> > > > NFS activity has ceased before the CM tries to remove the device.
> > > >
> > > > So if something is hanging up the CM, there's something xprtrdma
> > > > is not cleaning up properly.
> > > >
> > >
> > >
> > > Devesh, how are you reproducing this?  Are you just rmmod'ing the
> > > ocrdma module while there are active mounts?
> >
> > Yes, I am issuing rmmod while there is an active mount. In my case
> > rmmod ocrdma remains blocked forever.
> > Off-the-course of this discussion: Is there a reasoning behind not
> > using
> > ib_register_client()/ib_unregister_client() framework?
> 
> I think the idea is that you don't need to use it if you are transport-
> independent and use the rdmacm...

Okay, Makes sense..

> 
> 

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