include/linux/swap.h changed the definition for swap_unplug_io_fn() awhile
back, but mm/nommu.c was never updated to reflect the new definition.
As such, mm/nommu.c presently fails to compile. This fixes it.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>