[RFC PATCH 09/09] Introduce cache=rdma moutning option

[Long Li]

> Subject: Re: [RFC PATCH 09/09] Introduce cache=rdma moutning option
> 
> On Thu, May 17, 2018 at 05:22:14PM -0700, Long Li wrote:
> > From: Long Li <longli at microsoft.com>
> >
> > When cache=rdma is enabled on mount options, CIFS do not allocate
> > internal data buffer pages for I/O, data is read/writen directly to user
> memory via RDMA.
> 
> I don't think this should be an option.  For direct I/O without signing or
> encryption CIFS should always use get_user_pages, with or without RDMA.

Yes this should be done for all transport. If there are no objections, I'll send patches to change this.