Message-ID: <48B6E79E.6020702@kernel.org>
Date: Thu, 28 Aug 2008 19:59:58 +0200
From: Tejun Heo <tj@kernel.org>
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To: Greg KH <greg@kroah.com>
CC: fuse-devel@lists.sourceforge.net, miklos@szeredi.hu,
       linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5/7] FUSE: implement ioctl support
References: <1219945263-21074-1-git-send-email-tj@kernel.org> <1219945263-21074-6-git-send-email-tj@kernel.org> <20080828175116.GB18461@kroah.com>
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Greg KH wrote:
> Why do we need ioctls?  For CUSE?  In that case, would we need to copy
> the memory from userspace, into the kernel, and then back out into
> userspace again?  Can't we just have a "pass-through" type fixed ioctl
> instead?

Can you elaborate a bit?  How the fixed ioctl would know how much to
copy in and out and from where?

Thanks.

-- 
tejun
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