Adding functionality to allow the SCSI queue depth to be changed, by utilizing the "scsi_change_queue_depth" function.
Signed-off-by: Branden Bonaby <[email protected]> --- drivers/scsi/storvsc_drv.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 8472de1007ff..719ca9906fc2 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -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); -- 2.17.1
