parent_root_id 40 fs/btrfs/export.c u64 parent_root_id; parent_root_id 44 fs/btrfs/export.c parent_root_id = BTRFS_I(parent)->root->root_key.objectid; parent_root_id 46 fs/btrfs/export.c if (parent_root_id != fid->root_objectid) { parent_root_id 47 fs/btrfs/export.c fid->parent_root_objectid = parent_root_id;