akpm: It's a bit debatable.  The user passed in a buffer of a particular size,
and we successfully sopied the LDT info into it, but we got a fault when
clearing out the rest of the user's buffer.   Is that worth a -EFAULT?

I suppose so...
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>