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block: move holder_dir from disk to part0

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Move disk->holder_dir to part0->holder_dir.  Kill now mostly
superflous bdev_get_holder().

While at it, kill superflous kobject_get/put() around holder_dir,
slave_dir and cmd_filter creation and collapse
disk_sysfs_add_subdirs() into register_disk().  These serve no purpose
but obfuscating the code.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Tejun Heo
2008-08-25 19:56:11 +09:00
committed by Jens Axboe
parent b7db9956e5
commit 4c46501d16
4 changed files with 6 additions and 29 deletions
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block/cmd-filter.c
+2 -7
View File
@@ -211,14 +211,10 @@ int blk_register_filter(struct gendisk *disk)
{
int ret;
struct blk_cmd_filter *filter = &disk->queue->cmd_filter;
struct kobject *parent = kobject_get(disk->holder_dir->parent);
if (!parent)
return -ENODEV;
ret = kobject_init_and_add(&filter->kobj, &rcf_ktype, parent,
ret = kobject_init_and_add(&filter->kobj, &rcf_ktype,
&disk_to_dev(disk)->kobj,
"%s", "cmd_filter");
if (ret < 0)
return ret;
@@ -231,7 +227,6 @@ void blk_unregister_filter(struct gendisk *disk)
struct blk_cmd_filter *filter = &disk->queue->cmd_filter;
kobject_put(&filter->kobj);
kobject_put(disk->holder_dir->parent);
}
EXPORT_SYMBOL(blk_unregister_filter);
#endif