pvcalls-front: wait for other operations to return when release passive sockets
Passive sockets can have ongoing operations on them, specifically, we have two wait_event_interruptable calls in pvcalls_front_accept. Add two wake_up calls in pvcalls_front_release, then wait for the potential waiters to return and release the sock_mapping refcount. Signed-off-by: Stefano Stabellini <stefano@aporeto.com> Acked-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com>
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@ -1018,6 +1018,12 @@ int pvcalls_front_release(struct socket *sock)
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pvcalls_front_free_map(bedata, map);
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} else {
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wake_up(&bedata->inflight_req);
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wake_up(&map->passive.inflight_accept_req);
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while (atomic_read(&map->refcount) > 1)
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cpu_relax();
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spin_lock(&bedata->socket_lock);
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list_del(&map->list);
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spin_unlock(&bedata->socket_lock);
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