For 32-bit, one quickly discovers that swapon() is not given an fd already
opened with O_LARGEFILE to act upon and the forcing of O_LARGEFILE for
64-bit is irrelevant, as the system call's argument is a path.  So this
patch manually forces it for swapon() and swapoff().
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>