XFS_ABTB_MAGIC     50 fs/xfs/xfs_btree.c 	XFS_ABTB_MAGIC, XFS_ABTC_MAGIC, XFS_BMAP_MAGIC, XFS_IBT_MAGIC
XFS_ABTB_MAGIC    256 fs/xfs/xfs_fsops.c 		block->bb_magic = cpu_to_be32(XFS_ABTB_MAGIC);