btrfs_extent_map_in_tree
if (btrfs_extent_map_in_tree(em) && start >= em->start &&
ASSERT(!btrfs_extent_map_in_tree(new_em));
if (btrfs_extent_map_in_tree(em))
ASSERT(btrfs_extent_map_in_tree(cur));
WARN_ON(btrfs_extent_map_in_tree(em));
if (btrfs_extent_map_in_tree(em)) {
if (btrfs_extent_map_in_tree(em)) {