BTRFSIC_BLOCK_MAGIC_NUMBER  387 fs/btrfs/check-integrity.c 	b->magic_num = BTRFSIC_BLOCK_MAGIC_NUMBER;
BTRFSIC_BLOCK_MAGIC_NUMBER  425 fs/btrfs/check-integrity.c 	BUG_ON(!(NULL == b || BTRFSIC_BLOCK_MAGIC_NUMBER == b->magic_num));