[PATCH v2 20/31] arm64: User access library function

On Wed, Aug 15, 2012 at 02:49:54PM +0000, Arnd Bergmann wrote:

It's fairly unusual to have out of line get_user/put_user functions.
What is the reason for this, other than copying from ARM?

Actually, we never used to out of line on ARM, and then I experimented,
and found there was a net benefit - not only in code size but also
there appeared to be a performance benefit by out of lining them.