diff options
author | Tejun Heo <tj@kernel.org> | 2008-09-03 03:01:48 -0400 |
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committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 02:56:05 -0400 |
commit | f331c0296f2a9fee0d396a70598b954062603015 (patch) | |
tree | f74c467d58940131d97d90c4ea549843185e6ef0 /Documentation/md.txt | |
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 'Documentation/md.txt')
0 files changed, 0 insertions, 0 deletions