disk_err
disk_err(bp, "hard error", -1, 1);
disk_err(bio, "hard error", -1, 1);
disk_err(bp, "hard error", -1, 1);
disk_err(bp, "disk error" , -1, 0);
disk_err(bp, "hard error", -1, 1);
void disk_err(struct bio *bp, const char *what, int blkdone, int nl);