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由 Christoph Hellwig 提交于
The bdrv_aio_{read,write} routines can return a NULL pointer when the I/O submission fails. Currently we ignore this and will wait forever for an I/O completion and leading to a hang of the guest. I can easily reproduce this using the native Linux AIO patch, but it's also possible using normal pthreads-based AIO. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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