Re: [PATCH 4/8] storvsc: set virt_boundary_mask in the scsi host template

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On 6/17/19 5:19 AM, Christoph Hellwig wrote:
This ensures all proper DMA layer handling is taken care of by the
SCSI midlayer.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
  drivers/scsi/storvsc_drv.c | 5 ++---
  1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index b89269120a2d..7ed6f2fc1446 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1422,9 +1422,6 @@ static int storvsc_device_configure(struct scsi_device *sdevice)
  {
  	blk_queue_rq_timeout(sdevice->request_queue, (storvsc_timeout * HZ));
- /* Ensure there are no gaps in presented sgls */
-	blk_queue_virt_boundary(sdevice->request_queue, PAGE_SIZE - 1);
-
  	sdevice->no_write_same = 1;
/*
@@ -1697,6 +1694,8 @@ static struct scsi_host_template scsi_driver = {
  	.this_id =		-1,
  	/* Make sure we dont get a sg segment crosses a page boundary */
  	.dma_boundary =		PAGE_SIZE-1,
+	/* Ensure there are no gaps in presented sgls */
+	.virt_boundary_mask =	PAGE_SIZE-1,
  	.no_write_same =	1,
  	.track_queue_depth =	1,
  };

Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>



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