xfs: add CRC checks to block format directory blocks
Now that directory buffers are made from a single struct xfs_buf, we can add CRC calculation and checking callbacks. While there, add all the fields to the on disk structures for future functionality such as d_type support, uuids, block numbers, owner inode, etc. To distinguish between the different on disk formats, change the magic numbers for the new format directory blocks. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
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