458 static bool bd_may_claim(struct block_device *bdev, void *holder,  in bd_may_claim()  argument
469 		if (bdev->bd_holder == holder) {  in bd_may_claim()
500 int bd_prepare_to_claim(struct block_device *bdev, void *holder,  in bd_prepare_to_claim()  argument
505 	if (WARN_ON_ONCE(!holder))  in bd_prepare_to_claim()
510 	if (!bd_may_claim(bdev, holder, hops)) {  in bd_prepare_to_claim()
528 	whole->bd_claiming = holder;  in bd_prepare_to_claim()
534 static void bd_clear_claiming(struct block_device *whole, void *holder)  in bd_clear_claiming()  argument
538 	BUG_ON(whole->bd_claiming != holder);  in bd_clear_claiming()
552 static void bd_finish_claiming(struct block_device *bdev, void *holder,  in bd_finish_claiming()  argument
558 	BUG_ON(!bd_may_claim(bdev, holder, hops));  in bd_finish_claiming()
567 	bdev->bd_holder = holder;  in bd_finish_claiming()
570 	bd_clear_claiming(whole, holder);  in bd_finish_claiming()
583 void bd_abort_claiming(struct block_device *bdev, void *holder)  in bd_abort_claiming()  argument
586 	bd_clear_claiming(bdev_whole(bdev), holder);  in bd_abort_claiming()
591 static void bd_end_claim(struct block_device *bdev, void *holder)  in bd_end_claim()  argument
601 	WARN_ON_ONCE(bdev->bd_holder != holder);  in bd_end_claim()
752 struct block_device *blkdev_get_by_dev(dev_t dev, blk_mode_t mode, void *holder,  in blkdev_get_by_dev()  argument
772 	if (holder) {  in blkdev_get_by_dev()
774 		ret = bd_prepare_to_claim(bdev, holder, hops);  in blkdev_get_by_dev()
798 	if (holder) {  in blkdev_get_by_dev()
799 		bd_finish_claiming(bdev, holder, hops);  in blkdev_get_by_dev()
822 	if (holder)  in blkdev_get_by_dev()
823 		bd_abort_claiming(bdev, holder);  in blkdev_get_by_dev()
850 		void *holder, const struct blk_holder_ops *hops)  in blkdev_get_by_path()  argument
860 	bdev = blkdev_get_by_dev(dev, mode, holder, hops);  in blkdev_get_by_path()
862 		blkdev_put(bdev, holder);  in blkdev_get_by_path()
870 void blkdev_put(struct block_device *bdev, void *holder)  in blkdev_put()  argument
885 	if (holder)  in blkdev_put()
886 		bd_end_claim(bdev, holder);  in blkdev_put()