It's in fact completely harmless :) But not even calling it obviously is just as fine.
- [for-4.16 PATCH v2 0/3] block: some genhd changes Mike Snitzer
- [for-4.16 PATCH v2 3/3] dm: fix awkward request_que... Mike Snitzer
- [for-4.16 PATCH v2 1/3] block: only bdi_unregister(... Mike Snitzer
- Re: [for-4.16 PATCH v2 1/3] block: only bdi_unr... Mike Snitzer
- Re: [for-4.16 PATCH v2 1/3] block: only bdi_unr... Christoph Hellwig
- [for-4.16 PATCH v2 2/3] block: cope with gendisk's ... Mike Snitzer
- Re: [dm-devel] [for-4.16 PATCH v2 2/3] block: c... Ming Lei
- Re: [for-4.16 PATCH v2 2/3] block: cope wit... Mike Snitzer
- Re: [for-4.16 PATCH v2 2/3] block: cope... Ming Lei
- Re: [for-4.16 PATCH v2 2/3] block:... Mike Snitzer
- Re: [for-4.16 PATCH v2 2/3] block: cope with ge... Christoph Hellwig
- Re: [for-4.16 PATCH v2 2/3] block: cope wit... Hannes Reinecke