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Calculate and verify the checksums for directory leaf blocks (i.e. blocks that only contain actual directory entries). The checksum lives in what looks to be an unused directory entry with a 0 name_len at the end of the block. This scheme is not used for internal htree nodes because the mechanism in place there only costs one dx_entry, whereas the "empty" directory entry would cost two dx_entries. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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