Re: [PATCH 5/7] FUSE: implement ioctl support
From: Tejun Heo
Date: Thu Aug 28 2008 - 14:27:09 EST
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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