code:nblkdev - ikarishinjieva/unixV6-code-analyze-chs GitHub Wiki
- 定义 块设备 总数 nblkdev
4624 /* Nblkdev is the number of entries
4625 * (rows) in the block switch. It is
4626 * set in binit/bio.c by making
4627 * a pass over the switch.
4628 * Used in bounds checking on major
4629 * device numbers.
4630 */
4631 int nblkdev;