diff options
| author | Tejun Heo <tj@kernel.org> | 2008-09-03 09:01:48 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:05 +0200 |
| commit | f331c0296f2a9fee0d396a70598b954062603015 (patch) | |
| tree | f74c467d58940131d97d90c4ea549843185e6ef0 /drivers/scsi | |
| parent | cf771cb5a7b716f3f9e532fd42a1e3a0a75adec5 (diff) | |
block: don't depend on consecutive minor space
* Implement disk_devt() and part_devt() and use them to directly
access devt instead of computing it from ->major and ->first_minor.
Note that all references to ->major and ->first_minor outside of
block layer is used to determine devt of the disk (the part0) and as
->major and ->first_minor will continue to represent devt for the
disk, converting these users aren't strictly necessary. However,
convert them for consistency.
* Implement disk_max_parts() to avoid directly deferencing
genhd->minors.
* Update bdget_disk() such that it doesn't assume consecutive minor
space.
* Move devt computation from register_disk() to add_disk() and make it
the only one (all other usages use the initially determined value).
These changes clean up the code and will help disk->part dereference
fix and extended block device numbers.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/sr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 27f5bfd1def3..8dbe3798d5fd 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -878,7 +878,7 @@ static void sr_kref_release(struct kref *kref) struct gendisk *disk = cd->disk; spin_lock(&sr_index_lock); - clear_bit(disk->first_minor, sr_index_bits); + clear_bit(MINOR(disk_devt(disk)), sr_index_bits); spin_unlock(&sr_index_lock); unregister_cdrom(&cd->cdi); |