From 5170f40b102bcabed54e8fa8ec86957e35c41d41 Mon Sep 17 00:00:00 2001
From: Fam Zheng <famz@redhat.com>
Date: Tue, 23 Sep 2014 15:49:29 +0800
Subject: [PATCH] virtio-scsi: Call bdrv_io_plug/bdrv_io_unplug in cmd request
handling
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
hw/scsi/virtio-scsi.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
index 395178e949b..09a39cb9919 100644
--- a/hw/scsi/virtio-scsi.c
+++ b/hw/scsi/virtio-scsi.c
@@ -488,6 +488,8 @@ bool virtio_scsi_handle_cmd_req_prepare(VirtIOSCSI *s, VirtIOSCSIReq *req)
virtio_scsi_complete_cmd_req(req);
return false;
}
+ scsi_req_ref(req->sreq);
+ bdrv_io_plug(d->conf.bs);
return true;
}
@@ -496,6 +498,8 @@ void virtio_scsi_handle_cmd_req_submit(VirtIOSCSI *s, VirtIOSCSIReq *req)
if (scsi_req_enqueue(req->sreq)) {
scsi_req_continue(req->sreq);
}
+ bdrv_io_unplug(req->sreq->dev->conf.bs);
+ scsi_req_unref(req->sreq);
}
static void virtio_scsi_handle_cmd(VirtIODevice *vdev, VirtQueue *vq)
--
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