scsi: storvsc: Add ability to change scsi queue depth
Adding functionality to allow the SCSI queue depth to be changed by utilizing the "scsi_change_queue_depth" function. [mkp: checkpatch] Signed-off-by: Branden Bonaby <brandonbonaby94@gmail.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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@ -387,6 +387,7 @@ enum storvsc_request_type {
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static int storvsc_ringbuffer_size = (128 * 1024);
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static u32 max_outstanding_req_per_channel;
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static int storvsc_change_queue_depth(struct scsi_device *sdev, int queue_depth);
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static int storvsc_vcpus_per_sub_channel = 4;
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@ -1711,6 +1712,7 @@ static struct scsi_host_template scsi_driver = {
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.dma_boundary = PAGE_SIZE-1,
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.no_write_same = 1,
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.track_queue_depth = 1,
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.change_queue_depth = storvsc_change_queue_depth,
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};
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enum {
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@ -1917,6 +1919,15 @@ err_out0:
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return ret;
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}
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/* Change a scsi target's queue depth */
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static int storvsc_change_queue_depth(struct scsi_device *sdev, int queue_depth)
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{
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if (queue_depth > scsi_driver.can_queue)
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queue_depth = scsi_driver.can_queue;
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return scsi_change_queue_depth(sdev, queue_depth);
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}
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static int storvsc_remove(struct hv_device *dev)
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{
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struct storvsc_device *stor_device = hv_get_drvdata(dev);
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