old_root_bytenr 1088 fs/btrfs/transaction.c u64 old_root_bytenr; old_root_bytenr 1096 fs/btrfs/transaction.c old_root_bytenr = btrfs_root_bytenr(&root->root_item); old_root_bytenr 1097 fs/btrfs/transaction.c if (old_root_bytenr == root->node->start &&