Two patches targeted at the next merge window affecting the ioatdma
driver (used when NET_DMA and/or ASYNC_TX_DMA+MD_RAID456 are enabled).
According to perf the split locking update improves cpu utilization by a
few percentage points.

---

Dan Williams (2):
      ioat2,3: convert to producer/consumer locking
      ioat: convert to circ_buf


 drivers/dma/ioat/dma.h    |    1 
 drivers/dma/ioat/dma_v2.c |  184 +++++++++++++++++++++++----------------------
 drivers/dma/ioat/dma_v2.h |   33 +++-----
 drivers/dma/ioat/dma_v3.c |  117 +++++++++--------------------
 4 files changed, 142 insertions(+), 193 deletions(-)