1020  * @whole: whole block device containing @bdev, may equal @bdev
1031 static bool bd_may_claim(struct block_device *bdev, struct block_device *whole,  in bd_may_claim()  argument
1038 	else if (whole == bdev)  in bd_may_claim()
1039 		return true;  	 /* is a whole device which isn't held */  in bd_may_claim()
1041 	else if (whole->bd_holder == bd_may_claim)  in bd_may_claim()
1043 	else if (whole->bd_holder != NULL)  in bd_may_claim()
1052  * @whole: the whole device containing @bdev, may equal @bdev
1062 int bd_prepare_to_claim(struct block_device *bdev, struct block_device *whole,  in bd_prepare_to_claim()  argument
1068 	if (!bd_may_claim(bdev, whole, holder)) {  in bd_prepare_to_claim()
1074 	if (whole->bd_claiming) {  in bd_prepare_to_claim()
1075 		wait_queue_head_t *wq = bit_waitqueue(&whole->bd_claiming, 0);  in bd_prepare_to_claim()
1086 	whole->bd_claiming = holder;  in bd_prepare_to_claim()
1113 static void bd_clear_claiming(struct block_device *whole, void *holder)  in bd_clear_claiming()  argument
1117 	BUG_ON(whole->bd_claiming != holder);  in bd_clear_claiming()
1118 	whole->bd_claiming = NULL;  in bd_clear_claiming()
1119 	wake_up_bit(&whole->bd_claiming, 0);  in bd_clear_claiming()
1125  * @whole: whole block device
1132 		struct block_device *whole, void *holder)  in bd_finish_claiming()  argument
1135 	BUG_ON(!bd_may_claim(bdev, whole, holder));  in bd_finish_claiming()
1137 	 * Note that for a whole device bd_holders will be incremented twice,  in bd_finish_claiming()
1140 	whole->bd_holders++;  in bd_finish_claiming()
1141 	whole->bd_holder = bd_may_claim;  in bd_finish_claiming()
1144 	bd_clear_claiming(whole, holder);  in bd_finish_claiming()
1151  * @whole: whole block device
1158 void bd_abort_claiming(struct block_device *bdev, struct block_device *whole,  in bd_abort_claiming()  argument
1162 	bd_clear_claiming(whole, holder);  in bd_abort_claiming()
1440  *    mutex_lock_nested(whole->bd_mutex, 1)
1446 	struct block_device *whole = NULL, *claiming = NULL;  in __blkdev_get()  local
1460 		whole = bdget_disk(disk, 0);  in __blkdev_get()
1461 		if (!whole) {  in __blkdev_get()
1469 		if (whole)  in __blkdev_get()
1470 			claiming = whole;  in __blkdev_get()
1522 			ret = __blkdev_get(whole, mode, NULL, 1);  in __blkdev_get()
1525 			bdev->bd_contains = bdgrab(whole);  in __blkdev_get()
1576 	if (whole)  in __blkdev_get()
1577 		bdput(whole);  in __blkdev_get()
1593  	if (whole)  in __blkdev_get()
1594 		bdput(whole);  in __blkdev_get()