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[Qemu-stable] [PATCH 4/6] scsi: do not call scsi_read_data/scsi_write_da
From: |
Paolo Bonzini |
Subject: |
[Qemu-stable] [PATCH 4/6] scsi: do not call scsi_read_data/scsi_write_data for a canceled request |
Date: |
Tue, 5 Mar 2013 18:05:23 +0100 |
Cc: address@hidden
Signed-off-by: Paolo Bonzini <address@hidden>
---
hw/scsi-bus.c | 4 ++++
trace-events | 1 +
2 files changed, 5 insertions(+)
diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c
index a97f1cd..01e1dec 100644
--- a/hw/scsi-bus.c
+++ b/hw/scsi-bus.c
@@ -1508,6 +1508,10 @@ void scsi_req_unref(SCSIRequest *req)
will start the next chunk or complete the command. */
void scsi_req_continue(SCSIRequest *req)
{
+ if (req->io_canceled) {
+ trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag);
+ return;
+ }
trace_scsi_req_continue(req->dev->id, req->lun, req->tag);
if (req->cmd.mode == SCSI_XFER_TO_DEV) {
req->ops->write_data(req);
diff --git a/trace-events b/trace-events
index a27ae43..3064fc7 100644
--- a/trace-events
+++ b/trace-events
@@ -460,6 +460,7 @@ scsi_req_data(int target, int lun, int tag, int len)
"target %d lun %d tag %d le
scsi_req_data_canceled(int target, int lun, int tag, int len) "target %d lun
%d tag %d len %d"
scsi_req_dequeue(int target, int lun, int tag) "target %d lun %d tag %d"
scsi_req_continue(int target, int lun, int tag) "target %d lun %d tag %d"
+scsi_req_continue_canceled(int target, int lun, int tag) "target %d lun %d tag
%d"
scsi_req_parsed(int target, int lun, int tag, int cmd, int mode, int xfer)
"target %d lun %d tag %d command %d dir %d length %d"
scsi_req_parsed_lba(int target, int lun, int tag, int cmd, uint64_t lba)
"target %d lun %d tag %d command %d lba %"PRIu64
scsi_req_parse_bad(int target, int lun, int tag, int cmd) "target %d lun %d
tag %d command %d"
--
1.8.1.2
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Paolo Bonzini <=