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bfd8947194
Make sure we synchronize access to the namespaces list and grab a reference to the namespace before doing I/O. Make sure to reject the ioctl if multiple namespaces are present as it's entirely unsafe, and warn when using it even with a single namespace. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Acked-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com> |
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