nullb_indexes      71 drivers/block/null_blk_main.c static DEFINE_IDA(nullb_indexes);
nullb_indexes    1394 drivers/block/null_blk_main.c 	ida_simple_remove(&nullb_indexes, nullb->index);
nullb_indexes    1714 drivers/block/null_blk_main.c 	nullb->index = ida_simple_get(&nullb_indexes, 0, 0, GFP_KERNEL);