Hi all, Looks like we have the same code for RAID 4 and RAID 5, I could see the same make_request for both. Can someone point me in the code, where exactly we differentiate between these two. i.e updating checksum block, etc. -- Regards, Sandeep. “To learn is to change. Education is a process that changes the learner.” -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html