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Revision 3de0a294

ID3de0a2944bdb3047dce275560631834bcb4afe22

Added by Kevin Wolf about 13 years ago

qcow2: Batch flushes for COW

qcow2 calls bdrv_flush() after performing COW in order to ensure that the
L2 table change is never written before the copy is safe on disk. Now that the
L2 table is cached, we can wait with flushing until we write out the next L2
table.

Signed-off-by: Kevin Wolf <>

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