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由 Sagi Grimberg 提交于
When the backing file is a tempfile for example, the inode i_blkbits can be 1M in size which causes problems for hosts to support as the disk block size. Instead, expose the minimum between i_blkbits and 12 (4K sector size). Signed-off-by: NSagi Grimberg <sagi@grimberg.me> Reviewed-by: N- Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: NChristoph Hellwig <hch@lst.de>
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