xen_blkbk_unmap_prepare  759 drivers/block/xen-blkback/blkback.c 	invcount = xen_blkbk_unmap_prepare(ring, pages, req->nr_segs,
xen_blkbk_unmap_prepare  792 drivers/block/xen-blkback/blkback.c 		invcount = xen_blkbk_unmap_prepare(ring, pages, batch,