Commit adfbd028 authored by Branden Bonaby's avatar Branden Bonaby Committed by Martin K. Petersen
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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: default avatarBranden Bonaby <brandonbonaby94@gmail.com>
Reviewed-by: default avatarMichael Kelley <mikelley@microsoft.com>
Reviewed-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 6ea3b189

drivers/scsi/storvsc_drv.c

+11 −0
Original line number Diff line number Diff line
@@ -387,6 +387,7 @@ enum storvsc_request_type { 


static int storvsc_ringbuffer_size = (128 * 1024);

static u32 max_outstanding_req_per_channel;

static int storvsc_change_queue_depth(struct scsi_device *sdev, int queue_depth);



static int storvsc_vcpus_per_sub_channel = 4;
@@ -1711,6 +1712,7 @@ static struct scsi_host_template scsi_driver = { 
	.dma_boundary =		PAGE_SIZE-1,

	.no_write_same =	1,

	.track_queue_depth =	1,

	.change_queue_depth =	storvsc_change_queue_depth,

};



enum {
@@ -1917,6 +1919,15 @@ static int storvsc_probe(struct hv_device *device, 
	return ret;

}



/* Change a scsi target's queue depth */

static int storvsc_change_queue_depth(struct scsi_device *sdev, int queue_depth)

{

	if (queue_depth > scsi_driver.can_queue)

		queue_depth = scsi_driver.can_queue;



	return scsi_change_queue_depth(sdev, queue_depth);

}



static int storvsc_remove(struct hv_device *dev)

{

	struct storvsc_device *stor_device = hv_get_drvdata(dev);