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dmaengine: ioat: Decreasing allocation chunk size 2M->512K 

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@intel.com>
Signed-off-by: Leonid Ravich <Leonid.Ravich@emc.com>
Link: https://lore.kernel.org/r/20200416170628.16196-2-leonid.ravich@dell.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Leonid Ravich 2020-04-16 20:06:22 +03:00 committed by Vinod Koul
parent bd2bf302ee
commit a02254f8a6
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/ioat/dma.h
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@ -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 {