linux-kernel - Re: [PATCH 0/7] IB/hfi1: Remove write() and use ioctl() for user access

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Date:	Tue, 19 Apr 2016 11:40:21 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Ira Weiny <ira.weiny@...el.com>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Dennis Dalessandro <dennis.dalessandro@...el.com>,
	dledford@...hat.com, linux-rdma@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, torvalds@...ux-foundation.org,
	viro@...iv.linux.org.uk, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/7] IB/hfi1: Remove write() and use ioctl() for user
 access

On Mon, Apr 18, 2016 at 11:45:49PM -0400, Ira Weiny wrote:
> I'm a bit confused by what you are suggesting that "people will have to patch
> the driver with some vendor version if they really need it."?
> 
> Could you elaborate?

There are lots of drivers where we simply did not accept these vendor
specific extensions at all.  Especially for networking drivers it's
pretty common.  I'm not proposing this here, just saying that we have
lots of examples for it.