4 functions defined but not invoked

["Wang Sheng-Hui" <shhuiw@xxxxxxxxxxx>]

Hi Kent & Coly,

I noticed 4 release functions declared and defined, but are not invoked.
And I didn't find out how them are connected with some closures.

I wonder how they are invoked? Or invocation missed?
------------------------------------------------------------
void bch_cached_dev_release(struct kobject *);
void bch_flash_dev_release(struct kobject *);
void bch_cache_set_release(struct kobject *);
void bch_cache_release(struct kobject *);


Regards,
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