Pull second xfs update from Ben Myers:
 "Allow logical sector sized direct io on 'advanced format' 4k/512 disk"

* tag 'xfs-for-linus-v3.14-rc1-2' of git://oss.sgi.com/xfs/xfs:
  xfs: allow logical-sector sized O_DIRECT
  xfs: rename xfs_buftarg structure members
  xfs: clean up xfs_buftarg