The Btrfs raid56 uses the generic xor helpers. Signed-off-by: Chris Mason <chris.mason@fusionio.com>
@@ -7,6 +7,7 @@ config BTRFS_FS
select LZO_COMPRESS
select LZO_DECOMPRESS
select RAID6_PQ
+ select XOR_BLOCKS
help
Btrfs is a new filesystem with extents, writable snapshotting,
Tomasz Torcz