From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Cc: famz@redhat.com, dgilbert@redhat.com, qemu-stable@nongnu.org
Subject: [Qemu-devel] [PATCH] scsi: fix cancellation when I/O was completed but DMA was not.
Date: Mon, 12 Jan 2015 11:51:09 +0100 [thread overview]
Message-ID: <1421059869-4355-1-git-send-email-pbonzini@redhat.com> (raw)
Commit d577646 (scsi: Introduce scsi_req_cancel_complete, 2014-09-25)
was supposed to have no semantic change, but it missed a case. When
r->aiocb has already been NULLed, but DMA was not complete and the
SCSI layer was waiting for scsi_req_continue, after the patch the
SCSI layer will not call the .cancel callback of SCSIBusInfo.
Fixes: d5776465ee9a55815792efa34d79de240f4ffd99
Cc: qemu-stable@nongnu.org
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
hw/scsi/scsi-bus.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
index 24f7b74..9b740a3 100644
--- a/hw/scsi/scsi-bus.c
+++ b/hw/scsi/scsi-bus.c
@@ -1770,6 +1770,8 @@ void scsi_req_cancel(SCSIRequest *req)
req->io_canceled = true;
if (req->aiocb) {
blk_aio_cancel(req->aiocb);
+ } else {
+ scsi_req_cancel_complete(req);
}
}
--
1.8.3.1
reply other threads:[~2015-01-12 10:51 UTC|newest]
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