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virtio-scsi: Don't abort when media is ejected

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With an ejected block backend, blk_get_aio_context() would return
qemu_aio_context. In this case don't assert.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1473848224-24809-3-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Fam Zheng 2016-09-14 18:17:04 +08:00 committed by Paolo Bonzini
parent cd723b8560
commit 2a2d69f490
1 changed files with 9 additions and 6 deletions
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15
hw/scsi/virtio-scsi.c
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@ -236,6 +236,13 @@ static void virtio_scsi_cancel_notify(Notifier *notifier, void *data)
g_free(n);
}
static inline void virtio_scsi_ctx_check(VirtIOSCSI *s, SCSIDevice *d)
{
if (s->dataplane_started && d && blk_is_available(d->conf.blk)) {
assert(blk_get_aio_context(d->conf.blk) == s->ctx);
}
}
/* Return 0 if the request is ready to be completed and return to guest;
* -EINPROGRESS if the request is submitted and will be completed later, in the
* case of async cancellation. */
@ -247,9 +254,7 @@ static int virtio_scsi_do_tmf(VirtIOSCSI *s, VirtIOSCSIReq *req)
int target;
int ret = 0;
if (s->dataplane_started && d) {
assert(blk_get_aio_context(d->conf.blk) == s->ctx);
}
virtio_scsi_ctx_check(s, d);
/* Here VIRTIO_SCSI_S_OK means "FUNCTION COMPLETE". */
req->resp.tmf.response = VIRTIO_SCSI_S_OK;
@ -539,9 +544,7 @@ static bool virtio_scsi_handle_cmd_req_prepare(VirtIOSCSI *s, VirtIOSCSIReq *req
virtio_scsi_complete_cmd_req(req);
return false;
}
if (s->dataplane_started) {
assert(blk_get_aio_context(d->conf.blk) == s->ctx);
}
virtio_scsi_ctx_check(s, d);
req->sreq = scsi_req_new(d, req->req.cmd.tag,
virtio_scsi_get_lun(req->req.cmd.lun),
req->req.cmd.cdb, req);