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由 Christoph Hellwig 提交于
xfs_buf_zero is the only caller of xfs_buf_iomove. Remove support for copying from or to the buffer in xfs_buf_iomove and merge the two functions. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NDave Chinner <dchinner@redhat.com> Reviewed-by: NDarrick J. Wong <darrick.wong@oracle.com> Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
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