taglinefilesource code
mt_resid2701drivers/char/tpqic02.cioctl_status.mt_resid = operation.mt_count;
mt_resid2712drivers/char/tpqic02.cioctl_status.mt_resid = 0;
mt_resid2718drivers/char/tpqic02.cioctl_status.mt_resid = operation.mt_count;
mt_resid2969drivers/char/tpqic02.cioctl_status.mt_resid  = 0;  /* ---residual count */
mt_resid61include/linux/mtio.hlong  mt_resid;  /* residual count: (not sure)