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authorTejun Heo <tj@kernel.org>2008-08-25 12:56:17 +0200
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:08 +0200
commit3e1a7ff8a0a7b948f2684930166954f9e8e776fe (patch)
tree0a8642f5cdbc6ddfdd66dc7241c915e57b3cb7ff /fs/partitions
parentblock: replace @ext_minors with GENHD_FL_EXT_DEVT (diff)
downloadlinux-3e1a7ff8a0a7b948f2684930166954f9e8e776fe.tar.xz
linux-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 'fs/partitions')
-rw-r--r--fs/partitions/check.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 772b2ed8d239..0e411603fdf5 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -593,6 +593,7 @@ void del_gendisk(struct gendisk *disk)
disk_part_iter_exit(&piter);
invalidate_partition(disk, 0);
+ blk_free_devt(disk_to_dev(disk)->devt);
set_capacity(disk, 0);
disk->flags &= ~GENHD_FL_UP;
unlink_gendisk(disk);