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authorTejun Heo <tj@kernel.org>2008-08-25 19:56:17 +0900
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:08 +0200
commit3e1a7ff8a0a7b948f2684930166954f9e8e776fe (patch)
tree0a8642f5cdbc6ddfdd66dc7241c915e57b3cb7ff /block/blk-softirq.c
parent689d6fac40b41c7bf154f362deaf442548e4dc81 (diff)
downloadlinux-0-day-3e1a7ff8a0a7b948f2684930166954f9e8e776fe.tar.gz
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/blk-softirq.c')
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