xen_blkbk_unmap  1004 drivers/block/xen-blkback/blkback.c 	xen_blkbk_unmap(ring, pages, indirect_grefs);
xen_blkbk_unmap  1417 drivers/block/xen-blkback/blkback.c 	xen_blkbk_unmap(ring, pending_req->segments,