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| author | Tejun Heo <tj@kernel.org> | 2008-08-25 19:56:17 +0900 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:08 +0200 |
| commit | 3e1a7ff8a0a7b948f2684930166954f9e8e776fe (patch) | |
| tree | 0a8642f5cdbc6ddfdd66dc7241c915e57b3cb7ff /block/elevator.c | |
| parent | 689d6fac40b41c7bf154f362deaf442548e4dc81 (diff) | |
| download | lwn-3e1a7ff8a0a7b948f2684930166954f9e8e776fe.tar.gz lwn-3e1a7ff8a0a7b948f2684930166954f9e8e776fe.zip | |
block: allow disk to have extended device number
Now that disk and partition handlings are mostly unified, it's easy to
allow disk to have extended device number. This patch makes
add_disk() use extended device number if disk->minors is zero. Both
sd and ide-disk are updated to use this.
* sd_format_disk_name() is implemented which can generically determine
the drive name. This removes disk number restriction stemming from
limited device names.
* If sd index goes over SD_MAX_DISKS (which can be increased now BTW),
sd simply doesn't initialize minors letting block layer choose
extended device number.
* If CONFIG_DEBUG_EXT_DEVT is set, both sd and ide-disk always set
minors to 0 and use extended device numbers.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/elevator.c')
0 files changed, 0 insertions, 0 deletions