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502923bb44
Userspace can freely pass in whatever iovec it feels like, and it's perfectly legal to pass an iovec which contains a zero length segment. In the current implementation, uio_prefaultpages would touch an out of bound byte in the "last byte" logic. While this probably wouldn't cause any critical error, we would like uio_prefaultpages to be able to continue gracefully. Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #4078 |
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