chunk_root_generation  244 fs/btrfs/ctree.h 	__le64 chunk_root_generation;
chunk_root_generation 2121 fs/btrfs/ctree.h 			 struct btrfs_super_block, chunk_root_generation, 64);
chunk_root_generation 1697 fs/btrfs/transaction.c 	super->chunk_root_generation = root_item->generation;