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	No, you do NOT need to "protect copy from user" that way.
Incidentally, your userland ABI stinks.  I understand that you
wanted to accept "reset" and "reset\n" as equivalent, but I suspect
that accepting "reset this, you !@^!@!" had been an accident.
Nothing to do about that now - it is a userland ABI...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>