ext4: Calculate and verify checksums for htree nodes
Calculate and verify the checksum for directory index tree (htree) node blocks. The checksum is stored in the last 4 bytes of the htree block and requires the dx_entry array to stop 1 dx_entry short of the end of the block. Signed-off-by:Darrick J. Wong <djwong@us.ibm.com> Signed-off-by:
"Theodore Ts'o" <tytso@mit.edu>
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