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-rw-r--r--drivers/scsi/sg.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 37fb44b0074b..32425ac61096 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -741,7 +741,7 @@ static int
sg_common_write(Sg_fd * sfp, Sg_request * srp,
unsigned char *cmnd, int timeout, int blocking)
{
- int k, data_dir;
+ int k, data_dir, at_head;
Sg_device *sdp = sfp->parentdp;
sg_io_hdr_t *hp = &srp->header;
@@ -785,11 +785,16 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
break;
}
hp->duration = jiffies_to_msecs(jiffies);
+ if (hp->interface_id != '\0' && /* v3 (or later) interface */
+ (SG_FLAG_Q_AT_TAIL & hp->flags))
+ at_head = 0;
+ else
+ at_head = 1;
srp->rq->timeout = timeout;
kref_get(&sfp->f_ref); /* sg_rq_end_io() does kref_put(). */
blk_execute_rq_nowait(sdp->device->request_queue, sdp->disk,
- srp->rq, 1, sg_rq_end_io);
+ srp->rq, at_head, sg_rq_end_io);
return 0;
}

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