linux-kernel - Re: [PATCH 5/7] FUSE: implement ioctl support

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Date:	Thu, 28 Aug 2008 20:25:32 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Greg KH <greg@...ah.com>
CC:	fuse-devel@...ts.sourceforge.net, miklos@...redi.hu,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/7] FUSE: implement ioctl support

Greg KH wrote:
> No, I'm not worried about the performance, just that this should be
> simple as we can just pass "arg" to userspace without touching it as it
> just came from userspace, right?

For simple ones, that's how it's gonna be handled.  Those copying in and
out kicks in when the @arg is pointer or worse data structure which can
contain pointers.

> Oh wait, there are process space issues at play here that I'm totally
> forgetting about, right?

:-)

Thanks.

-- 
tejun
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