1518 	struct extent_map_tree *em_tree;  in find_next_chunk()  local
1523 	em_tree = &fs_info->mapping_tree.map_tree;  in find_next_chunk()
1524 	read_lock(&em_tree->lock);  in find_next_chunk()
1525 	n = rb_last(&em_tree->map);  in find_next_chunk()
1530 	read_unlock(&em_tree->lock);  in find_next_chunk()
2731 	struct extent_map_tree *em_tree;  in btrfs_remove_chunk()  local
2741 	em_tree = &root->fs_info->mapping_tree.map_tree;  in btrfs_remove_chunk()
2743 	read_lock(&em_tree->lock);  in btrfs_remove_chunk()
2744 	em = lookup_extent_mapping(em_tree, chunk_offset, 1);  in btrfs_remove_chunk()
2745 	read_unlock(&em_tree->lock);  in btrfs_remove_chunk()
4493 	struct extent_map_tree *em_tree;  in __btrfs_alloc_chunk()  local
4730 	em_tree = &extent_root->fs_info->mapping_tree.map_tree;  in __btrfs_alloc_chunk()
4731 	write_lock(&em_tree->lock);  in __btrfs_alloc_chunk()
4732 	ret = add_extent_mapping(em_tree, em, 0);  in __btrfs_alloc_chunk()
4737 	write_unlock(&em_tree->lock);  in __btrfs_alloc_chunk()
4766 	write_lock(&em_tree->lock);  in __btrfs_alloc_chunk()
4767 	remove_extent_mapping(em_tree, em);  in __btrfs_alloc_chunk()
4768 	write_unlock(&em_tree->lock);  in __btrfs_alloc_chunk()
4790 	struct extent_map_tree *em_tree;  in btrfs_finish_chunk_alloc()  local
4799 	em_tree = &extent_root->fs_info->mapping_tree.map_tree;  in btrfs_finish_chunk_alloc()
4800 	read_lock(&em_tree->lock);  in btrfs_finish_chunk_alloc()
4801 	em = lookup_extent_mapping(em_tree, chunk_offset, chunk_size);  in btrfs_finish_chunk_alloc()
4802 	read_unlock(&em_tree->lock);  in btrfs_finish_chunk_alloc()
5014 	struct extent_map_tree *em_tree = &map_tree->map_tree;  in btrfs_num_copies()  local
5017 	read_lock(&em_tree->lock);  in btrfs_num_copies()
5018 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_num_copies()
5019 	read_unlock(&em_tree->lock);  in btrfs_num_copies()
5067 	struct extent_map_tree *em_tree = &map_tree->map_tree;  in btrfs_full_stripe_len()  local
5070 	read_lock(&em_tree->lock);  in btrfs_full_stripe_len()
5071 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_full_stripe_len()
5072 	read_unlock(&em_tree->lock);  in btrfs_full_stripe_len()
5088 	struct extent_map_tree *em_tree = &map_tree->map_tree;  in btrfs_is_parity_mirror()  local
5091 	read_lock(&em_tree->lock);  in btrfs_is_parity_mirror()
5092 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_is_parity_mirror()
5093 	read_unlock(&em_tree->lock);  in btrfs_is_parity_mirror()
5216 	struct extent_map_tree *em_tree = &map_tree->map_tree;  in __btrfs_map_block()  local
5238 	read_lock(&em_tree->lock);  in __btrfs_map_block()
5239 	em = lookup_extent_mapping(em_tree, logical, *length);  in __btrfs_map_block()
5240 	read_unlock(&em_tree->lock);  in __btrfs_map_block()
5772 	struct extent_map_tree *em_tree = &map_tree->map_tree;  in btrfs_rmap_block()  local
5782 	read_lock(&em_tree->lock);  in btrfs_rmap_block()
5783 	em = lookup_extent_mapping(em_tree, chunk_start, 1);  in btrfs_rmap_block()
5784 	read_unlock(&em_tree->lock);  in btrfs_rmap_block()