1034  * @whole: whole block device containing @bdev, may equal @bdev
1045 static bool bd_may_claim(struct block_device *bdev, struct block_device *whole,  in bd_may_claim()  argument
1052 	else if (whole == bdev)  in bd_may_claim()
1053 		return true;  	 /* is a whole device which isn't held */  in bd_may_claim()
1055 	else if (whole->bd_holder == bd_may_claim)  in bd_may_claim()
1057 	else if (whole->bd_holder != NULL)  in bd_may_claim()
1066  * @whole: the whole device containing @bdev, may equal @bdev
1076 int bd_prepare_to_claim(struct block_device *bdev, struct block_device *whole,  in bd_prepare_to_claim()  argument
1082 	if (!bd_may_claim(bdev, whole, holder)) {  in bd_prepare_to_claim()
1088 	if (whole->bd_claiming) {  in bd_prepare_to_claim()
1089 		wait_queue_head_t *wq = bit_waitqueue(&whole->bd_claiming, 0);  in bd_prepare_to_claim()
1100 	whole->bd_claiming = holder;  in bd_prepare_to_claim()
1127 static void bd_clear_claiming(struct block_device *whole, void *holder)  in bd_clear_claiming()  argument
1131 	BUG_ON(whole->bd_claiming != holder);  in bd_clear_claiming()
1132 	whole->bd_claiming = NULL;  in bd_clear_claiming()
1133 	wake_up_bit(&whole->bd_claiming, 0);  in bd_clear_claiming()
1139  * @whole: whole block device
1146 		struct block_device *whole, void *holder)  in bd_finish_claiming()  argument
1149 	BUG_ON(!bd_may_claim(bdev, whole, holder));  in bd_finish_claiming()
1151 	 * Note that for a whole device bd_holders will be incremented twice,  in bd_finish_claiming()
1154 	whole->bd_holders++;  in bd_finish_claiming()
1155 	whole->bd_holder = bd_may_claim;  in bd_finish_claiming()
1158 	bd_clear_claiming(whole, holder);  in bd_finish_claiming()
1165  * @whole: whole block device
1172 void bd_abort_claiming(struct block_device *bdev, struct block_device *whole,  in bd_abort_claiming()  argument
1176 	bd_clear_claiming(whole, holder);  in bd_abort_claiming()
1457  *    mutex_lock_nested(whole->bd_mutex, 1)
1463 	struct block_device *whole = NULL, *claiming = NULL;  in __blkdev_get()  local
1477 		whole = bdget_disk(disk, 0);  in __blkdev_get()
1478 		if (!whole) {  in __blkdev_get()
1486 		if (whole)  in __blkdev_get()
1487 			claiming = whole;  in __blkdev_get()
1539 			ret = __blkdev_get(whole, mode, NULL, 1);  in __blkdev_get()
1542 			bdev->bd_contains = bdgrab(whole);  in __blkdev_get()
1593 	if (whole)  in __blkdev_get()
1594 		bdput(whole);  in __blkdev_get()
1610  	if (whole)  in __blkdev_get()
1611 		bdput(whole);  in __blkdev_get()