linux-kernel - Re: [lustre-devel] [PATCH] staging: lustre: Fix a spatch warning due to an assignment from kernel to user space

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Date:   Wed, 7 Dec 2016 19:52:39 +0000 (GMT)
From:   James Simmons <jsimmons@...radead.org>
To:     Dan Carpenter <dan.carpenter@...cle.com>
cc:     Quentin Lambert <lambert.quentin@...il.com>,
        devel@...verdev.osuosl.org,
        Andreas Dilger <andreas.dilger@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
        Oleg Drokin <oleg.drokin@...el.com>,
        lustre-devel@...ts.lustre.org
Subject: Re: [lustre-devel] [PATCH] staging: lustre: Fix a spatch warning
 due to an assignment from kernel to user space


> > On 12/07/2016 04:33 PM, Dan Carpenter wrote:
> > >Lustre is kind of a mess with regards to keeping user and kernel
> > >pointers separate.  It's not going to be easy to fix.
> > Fair enough.
> > I am trying to make a contribution to drivers/staging using sparse.
> > With that in mind, do you still fill I should keep clear of lustre?
> > I feel that actually doing the work properly could be a meaningful
> > learning experience.
> 
> It's just that you're the fifth person to look at lustre __user
> annotations and it doesn't end well.  You need to be a lustre expert
> who can test things.
> 
> But for other lustre things, feel free.

Actually we are working to fix this issue. We are working on a 
process that lustre patch posted here get sucked up and put
into our test harness automatically. It needs more love but its
coming along.