The patch titled
Subject: nvme: use the DMA_ATTR_NO_WARN attribute
has been added to the -mm tree. Its filename is
nvme-use-the-dma_attr_no_warn-attribute.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/nvme-use-the-dma_attr_no_warn-attribute.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/nvme-use-the-dma_attr_no_warn-attribute.patch
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------------------------------------------------------
From: Mauricio Faria de Oliveira <mauricfo@xxxxxxxxxxxxxxxxxx>
Subject: nvme: use the DMA_ATTR_NO_WARN attribute
Use the DMA_ATTR_NO_WARN attribute for the dma_map_sg() call of the nvme
driver that returns BLK_MQ_RQ_QUEUE_BUSY (not for BLK_MQ_RQ_QUEUE_ERROR).
Link: http://lkml.kernel.org/r/1470092390-25451-4-git-send-email-mauricfo@xxxxxxxxxxxxxxxxxx
Signed-off-by: Mauricio Faria de Oliveira <mauricfo@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxxxxx>
Cc: Keith Busch <keith.busch@xxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/nvme/host/pci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN drivers/nvme/host/pci.c~nvme-use-the-dma_attr_no_warn-attribute drivers/nvme/host/pci.c
--- a/drivers/nvme/host/pci.c~nvme-use-the-dma_attr_no_warn-attribute
+++ a/drivers/nvme/host/pci.c
@@ -503,7 +503,8 @@ static int nvme_map_data(struct nvme_dev
goto out;
ret = BLK_MQ_RQ_QUEUE_BUSY;
- if (!dma_map_sg(dev->dev, iod->sg, iod->nents, dma_dir))
+ if (!dma_map_sg_attrs(dev->dev, iod->sg, iod->nents, dma_dir,
+ DMA_ATTR_NO_WARN))
goto out;
if (!nvme_setup_prps(dev, req, size))
_
Patches currently in -mm which might be from mauricfo@xxxxxxxxxxxxxxxxxx are
dma-mapping-introduce-the-dma_attr_no_warn-attribute.patch
powerpc-implement-the-dma_attr_no_warn-attribute.patch
nvme-use-the-dma_attr_no_warn-attribute.patch
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