DISK_PITER_REVERSE  170 block/genhd.c  	if (flags & DISK_PITER_REVERSE)
DISK_PITER_REVERSE  206 block/genhd.c  	if (piter->flags & DISK_PITER_REVERSE) {
DISK_PITER_REVERSE  788 block/genhd.c  			     DISK_PITER_INCL_EMPTY | DISK_PITER_REVERSE);