Hi, is there size limit on the buffer content as i am using "cat" command ( so ,not allocating any buffer in userspace, so not doing any copy_to_user from kernel; simply doing sprintf(buffer, %s , data ) from kernel for a big data ) -Ratheesh -- To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs