RING_REQUEST_PROD_OVERFLOW 1136 drivers/block/xen-blkback/blkback.c 	if (RING_REQUEST_PROD_OVERFLOW(&blk_rings->common, rp)) {
RING_REQUEST_PROD_OVERFLOW  738 drivers/xen/xen-scsiback.c 	if (RING_REQUEST_PROD_OVERFLOW(ring, rp)) {