Re: Provide example copy_in_user implementation

Russell King (rmk@arm.linux.org.uk)
Tue, 24 Jun 2003 11:18:20 +0100

On Tue, Jun 24, 2003 at 12:06:10PM +0200, Pavel Machek wrote:
> This patch adds example copy_in_user implementation (copy_in_user is
> needed for new ioctl32 implementation, all 64bit archs will need
> it)... Please apply,

get_user / put_user on byte quantities may be faster than using
copy_from_user/copy_to_user on byte quantities. Yes, it may be
a generic implementation, but there's no point in purposely making
it inefficient.

-- 
Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html


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