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由 Christoph Hellwig 提交于
This allows the host driver to indicate the maximum supported segment size in a nice an easy way, so that the driver doesn't have to worry about DMA-layer imposed limitations. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NBart Van Assche <bvanassche@acm.org> Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
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