You have calculated = jbd2_chksum(j, calculated, buf, j->j_blocksize); provided = be32_to_cpu(tag->t_checksum); return provided == cpu_to_be32(calculated); in there, which makes no sense whatsoever. First of all, you are converting big-endian to native, then another native to big-endian and compare results. The bogosity aside, it's equivalent to simply comparing tag->t_checksum with calculated - cpu_to_be32() is the same mapping as be32_to_cpu() on all architectures and it's a one-to-one mapping, at that. Bogosity, of course, is that tag->t_checksum is apparently big-endian and definitely a 16bit value. How in hell is that check going to yield true? Note that you are asking for 16 bits out of crc32c result to be zero, _NOT_ to be ignored. Producer of that value shoves lower 16 bits of cpu_to_be32(crc) into the on-disk structure. Also a bloody bad idea, since the values on little-endian and big-endian hosts will be different; move the disk from one box to another and watch the mismatches... What the hell is going on there? -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
