null_major 70 drivers/block/null_blk_main.c static int null_major; null_major 1540 drivers/block/null_blk_main.c disk->major = null_major; null_major 1804 drivers/block/null_blk_main.c null_major = register_blkdev(0, "nullb"); null_major 1805 drivers/block/null_blk_main.c if (null_major < 0) { null_major 1806 drivers/block/null_blk_main.c ret = null_major; null_major 1833 drivers/block/null_blk_main.c unregister_blkdev(null_major, "nullb"); null_major 1848 drivers/block/null_blk_main.c unregister_blkdev(null_major, "nullb");