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

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Message-ID: <20160415210333.GD10689@leon.nu>
Date:	Sat, 16 Apr 2016 00:03:33 +0300
From:	Leon Romanovsky <leon@...n.nu>
To:	"Woodruff, Robert J" <robert.j.woodruff@...el.com>
Cc:	Christoph Hellwig <hch@...radead.org>,
	"Weiny, Ira" <ira.weiny@...el.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	"Dalessandro, Dennis" <dennis.dalessandro@...el.com>,
	"dledford@...hat.com" <dledford@...hat.com>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/7] IB/hfi1: Remove write() and use ioctl() for user
 access

On Fri, Apr 15, 2016 at 05:44:48PM +0000, Woodruff, Robert J wrote:
> > I fear it's kfabrics, which is an entirely crackpot idea and a total non-starter, but for some reason Intel and their buddies keep wasting time on it.
> 
> What is being discussed her is not kfabrics. That is a totally different out of kernel pathfinding project at this point.
> What is being discussed here is how to best solve the write/writev issue with the PSM interface. The code submitted was to move
> to IOCTL instead, but people like Jason have suggested routing the IOCTLs through the verbs layer instead.

The discussion here is much broader than conversion of PSM interface.

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