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scsi: storvsc: use default I/O timeout handler for FC devices 

FC disks issue I/O directly to the host storage port driver, this is
diffirent to VHD disks where I/O is virtualized and timeout is handled
by the host VSP (Virtualization Service Provider).

FC disks are usually setup in a multipath system, and they don't want to
reset timer on I/O timeout. Timeout is detected by multipath as a good
time to failover and recover.

Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Long Li 2017-06-13 14:34:05 -07:00 committed by Martin K. Petersen
parent 5cc973f09e
commit 3930d73098
1 changed files with 4 additions and 0 deletions
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4
drivers/scsi/storvsc_drv.c
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@ -1495,6 +1495,10 @@ static int storvsc_host_reset_handler(struct scsi_cmnd *scmnd)
*/
static enum blk_eh_timer_return storvsc_eh_timed_out(struct scsi_cmnd *scmnd)
{
#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
if (scmnd->device->host->transportt == fc_transport_template)
return fc_eh_timed_out(scmnd);
#endif
return BLK_EH_RESET_TIMER;
}