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virito_scsi: use freezable WQ for events

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Michael S. Tsirkin noticed a race condition:
we reset device on freeze, but system WQ is still
running so it might try adding bufs to a VQ meanwhile.

To fix, switch to handling events from the freezable WQ.

Reported-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Paolo Bonzini 2014-10-15 10:22:33 +10:30 committed by Rusty Russell
parent e53fbd11e9
commit 1fa5b2a784
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/virtio_scsi.c
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@ -390,7 +390,7 @@ static void virtscsi_complete_event(struct virtio_scsi *vscsi, void *buf)
{
struct virtio_scsi_event_node *event_node = buf;
schedule_work(&event_node->work);
queue_work(system_freezable_wq, &event_node->work);
}
static void virtscsi_event_done(struct virtqueue *vq)