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| author | Tejun Heo <tj@kernel.org> | 2008-08-29 09:01:47 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:07 +0200 |
| commit | 548b10eb2959c96cef6fc29fc96e0931eeb53bc5 (patch) | |
| tree | 7166bc04336b80a69f87a9add097919b418f4f43 /include/linux/genhd.h | |
| parent | 80795aefb76d10c5d698e60c7e7750b5330787da (diff) | |
| download | lwn-548b10eb2959c96cef6fc29fc96e0931eeb53bc5.tar.gz lwn-548b10eb2959c96cef6fc29fc96e0931eeb53bc5.zip | |
block: move __dev from disk to part0
Move disk->__dev to part0->__dev. This simplifies bdget_disk() and
lookup_devt() and allows common sysfs attributes to be unified.
part_to_disk() is updated to handle part0 -> disk.
Updated to include a fix from Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
he writes:
"part0 is a "special" partition and doesn't need to have capacity set - this
fixes regression caused by "block: move __dev from disk to part0" commit."
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/genhd.h')
| -rw-r--r-- | include/linux/genhd.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 1cf828148ec6..ff293ec8b3f7 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -16,9 +16,9 @@ #ifdef CONFIG_BLOCK #define kobj_to_dev(k) container_of((k), struct device, kobj) -#define dev_to_disk(device) container_of((device), struct gendisk, __dev) +#define dev_to_disk(device) container_of((device), struct gendisk, part0.__dev) #define dev_to_part(device) container_of((device), struct hd_struct, __dev) -#define disk_to_dev(disk) (&((disk)->__dev)) +#define disk_to_dev(disk) (&(disk)->part0.__dev) #define part_to_dev(part) (&((part)->__dev)) extern struct device_type part_type; @@ -141,7 +141,6 @@ struct gendisk { int flags; struct device *driverfs_dev; // FIXME: remove - struct device __dev; struct kobject *holder_dir; struct kobject *slave_dir; @@ -164,8 +163,12 @@ struct gendisk { static inline struct gendisk *part_to_disk(struct hd_struct *part) { - if (likely(part)) - return dev_to_disk(part_to_dev(part)->parent); + if (likely(part)) { + if (part->partno) + return dev_to_disk(part_to_dev(part)->parent); + else + return dev_to_disk(part_to_dev(part)); + } return NULL; } |