DM_PREFETCH_CHUNKS  512 drivers/md/dm-snap-persistent.c 	dm_bufio_set_minimum_buffers(client, 1 + DM_PREFETCH_CHUNKS);
DM_PREFETCH_CHUNKS  526 drivers/md/dm-snap-persistent.c 		if (DM_PREFETCH_CHUNKS) do {
DM_PREFETCH_CHUNKS  534 drivers/md/dm-snap-persistent.c 		} while (prefetch_area <= ps->current_area + DM_PREFETCH_CHUNKS);