BTRFSIC_BLOCK_LINK_MAGIC_NUMBER  431 fs/btrfs/check-integrity.c 	l->magic_num = BTRFSIC_BLOCK_LINK_MAGIC_NUMBER;
BTRFSIC_BLOCK_LINK_MAGIC_NUMBER  453 fs/btrfs/check-integrity.c 	BUG_ON(!(NULL == l || BTRFSIC_BLOCK_LINK_MAGIC_NUMBER == l->magic_num));