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scsi: do not call scsi_read_data/scsi_write_data for a canceled request

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Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-02-25 12:12:58 +01:00
parent 3c33ea9640
commit 6f6710aa99
2 changed files with 5 additions and 0 deletions
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4
hw/scsi-bus.c
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@ -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);

1
trace-events
View File

@ -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"