a) upper 32 bits of cpu_to_le64(x) are *not* cpu_to_le32(x) of
    upper 32 bits.
 b) ->ByteCount cleaned up.
Signed-off-by: Al Viro <viro@parcelfarce.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>