1374 	struct extent_map_tree *em_tree;  in find_next_chunk()  local
1379 	em_tree = &fs_info->mapping_tree.map_tree;  in find_next_chunk()
1380 	read_lock(&em_tree->lock);  in find_next_chunk()
1381 	n = rb_last(&em_tree->map);  in find_next_chunk()
1386 	read_unlock(&em_tree->lock);  in find_next_chunk()
2584 	struct extent_map_tree *em_tree;  in btrfs_remove_chunk()  local
2594 	em_tree = &root->fs_info->mapping_tree.map_tree;  in btrfs_remove_chunk()
2596 	read_lock(&em_tree->lock);  in btrfs_remove_chunk()
2597 	em = lookup_extent_mapping(em_tree, chunk_offset, 1);  in btrfs_remove_chunk()
2598 	read_unlock(&em_tree->lock);  in btrfs_remove_chunk()
4225 	struct extent_map_tree *em_tree;  in __btrfs_alloc_chunk()  local
4462 	em_tree = &extent_root->fs_info->mapping_tree.map_tree;  in __btrfs_alloc_chunk()
4463 	write_lock(&em_tree->lock);  in __btrfs_alloc_chunk()
4464 	ret = add_extent_mapping(em_tree, em, 0);  in __btrfs_alloc_chunk()
4469 	write_unlock(&em_tree->lock);  in __btrfs_alloc_chunk()
4498 	write_lock(&em_tree->lock);  in __btrfs_alloc_chunk()
4499 	remove_extent_mapping(em_tree, em);  in __btrfs_alloc_chunk()
4500 	write_unlock(&em_tree->lock);  in __btrfs_alloc_chunk()
4522 	struct extent_map_tree *em_tree;  in btrfs_finish_chunk_alloc()  local
4531 	em_tree = &extent_root->fs_info->mapping_tree.map_tree;  in btrfs_finish_chunk_alloc()
4532 	read_lock(&em_tree->lock);  in btrfs_finish_chunk_alloc()
4533 	em = lookup_extent_mapping(em_tree, chunk_offset, chunk_size);  in btrfs_finish_chunk_alloc()
4534 	read_unlock(&em_tree->lock);  in btrfs_finish_chunk_alloc()
4746 	struct extent_map_tree *em_tree = &map_tree->map_tree;  in btrfs_num_copies()  local
4749 	read_lock(&em_tree->lock);  in btrfs_num_copies()
4750 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_num_copies()
4751 	read_unlock(&em_tree->lock);  in btrfs_num_copies()
4799 	struct extent_map_tree *em_tree = &map_tree->map_tree;  in btrfs_full_stripe_len()  local
4802 	read_lock(&em_tree->lock);  in btrfs_full_stripe_len()
4803 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_full_stripe_len()
4804 	read_unlock(&em_tree->lock);  in btrfs_full_stripe_len()
4820 	struct extent_map_tree *em_tree = &map_tree->map_tree;  in btrfs_is_parity_mirror()  local
4823 	read_lock(&em_tree->lock);  in btrfs_is_parity_mirror()
4824 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_is_parity_mirror()
4825 	read_unlock(&em_tree->lock);  in btrfs_is_parity_mirror()
4950 	struct extent_map_tree *em_tree = &map_tree->map_tree;  in __btrfs_map_block()  local
4972 	read_lock(&em_tree->lock);  in __btrfs_map_block()
4973 	em = lookup_extent_mapping(em_tree, logical, *length);  in __btrfs_map_block()
4974 	read_unlock(&em_tree->lock);  in __btrfs_map_block()
5506 	struct extent_map_tree *em_tree = &map_tree->map_tree;  in btrfs_rmap_block()  local
5516 	read_lock(&em_tree->lock);  in btrfs_rmap_block()
5517 	em = lookup_extent_mapping(em_tree, chunk_start, 1);  in btrfs_rmap_block()
5518 	read_unlock(&em_tree->lock);  in btrfs_rmap_block()