Merge branch 'topic/uek-4.1/aio-dio' of git://ca-git.us.oracle.com/linux-uek into...

Merge branch 'topic/uek-4.1/aio-dio' of git://ca-git.us.oracle.com/linux-uek into uek/uek-4.1

* 'topic/uek-4.1/aio-dio' of git://ca-git.us.oracle.com/linux-uek:
  block: loop: support DIO & AIO
  block: loop: prepare for supporing direct IO
  block: loop: use kthread_work
  block: loop: set QUEUE_FLAG_NOMERGES for request queue of loop
  fs: direct-io: don't dirtying pages for ITER_BVEC/ITER_KVEC direct read
  nfs: don't dirty kernel pages read by direct-io
  block: loop: avoiding too many pending per work I/O
  block: loop: convert to per-device workqueue