[PATCH v3 2/2] dmaengine: ioat: Decreasing allocation chunk size 2M->512K

[leonid . ravich]

From: Leonid Ravich <Leonid.Ravich@xxxxxxx>

requreing kmalloc of 2M high chance to fail in
fragmented memory.
IOAT ring requires 64k * 64B memory
which will be achived by 512k * 8 allocation
instead of 2M * 2.

Acked-by: Dave Jiang <dave.jiang@xxxxxxxxx>
Signed-off-by: Leonid Ravich <Leonid.Ravich@xxxxxxx>
---
Changing in v3:
  - Make the commit message more clearer.


 drivers/dma/ioat/dma.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index 5216c6b..e6b622e 100644
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -83,7 +83,7 @@ struct ioatdma_device {
 
 #define IOAT_MAX_ORDER 16
 #define IOAT_MAX_DESCS (1 << IOAT_MAX_ORDER)
-#define IOAT_CHUNK_SIZE (SZ_2M)
+#define IOAT_CHUNK_SIZE (SZ_512K)
 #define IOAT_DESCS_PER_CHUNK (IOAT_CHUNK_SIZE / IOAT_DESC_SZ)
 
 struct ioat_descs {
-- 
1.9.3