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| author | Branden Bonaby <brandonbonaby94@gmail.com> | 2019-06-15 02:48:22 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-06-20 22:37:02 +0300 |
| commit | adfbd028e155fca3bbe33d458f2f27cb657e5792 (patch) | |
| tree | c06c6027e7a5a2d49195d7b9218659277b236be8 | |
| parent | 6ea3b189f7704f0881815b414a20f36a2529030c (diff) | |
| download | linux-adfbd028e155fca3bbe33d458f2f27cb657e5792.tar.xz | |
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>
| -rw-r--r-- | drivers/scsi/storvsc_drv.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 8472de1007ff..5b6c0f88da59 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 @@ err_out0: 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); |