928 	struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;  in get_extent_allocation_hint()  local
932 	read_lock(&em_tree->lock);  in get_extent_allocation_hint()
933 	em = search_extent_mapping(em_tree, start, num_bytes);  in get_extent_allocation_hint()
942 			em = search_extent_mapping(em_tree, 0, 0);  in get_extent_allocation_hint()
952 	read_unlock(&em_tree->lock);  in get_extent_allocation_hint()
5054 	struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;  in btrfs_cont_expand()  local
5129 				write_lock(&em_tree->lock);  in btrfs_cont_expand()
5130 				err = add_extent_mapping(em_tree, hole_em, 1);  in btrfs_cont_expand()
5131 				write_unlock(&em_tree->lock);  in btrfs_cont_expand()
6975 static int merge_extent_mapping(struct extent_map_tree *em_tree,  in merge_extent_mapping()  argument
7008 	return add_extent_mapping(em_tree, em, 0);  in merge_extent_mapping()
7083 	struct extent_map_tree *em_tree = &inode->extent_tree;  in btrfs_get_extent()  local
7089 	read_lock(&em_tree->lock);  in btrfs_get_extent()
7090 	em = lookup_extent_mapping(em_tree, start, len);  in btrfs_get_extent()
7093 	read_unlock(&em_tree->lock);  in btrfs_get_extent()
7293 	write_lock(&em_tree->lock);  in btrfs_get_extent()
7294 	ret = add_extent_mapping(em_tree, em, 0);  in btrfs_get_extent()
7304 		existing = search_extent_mapping(em_tree, start, len);  in btrfs_get_extent()
7319 			err = merge_extent_mapping(em_tree, existing,  in btrfs_get_extent()
7328 	write_unlock(&em_tree->lock);  in btrfs_get_extent()
7834 	struct extent_map_tree *em_tree;  in create_io_em()  local
7844 	em_tree = &BTRFS_I(inode)->extent_tree;  in create_io_em()
7869 		write_lock(&em_tree->lock);  in create_io_em()
7870 		ret = add_extent_mapping(em_tree, em, 1);  in create_io_em()
7871 		write_unlock(&em_tree->lock);  in create_io_em()
10637 	struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;  in __btrfs_prealloc_file_range()  local
10725 			write_lock(&em_tree->lock);  in __btrfs_prealloc_file_range()
10726 			ret = add_extent_mapping(em_tree, em, 1);  in __btrfs_prealloc_file_range()
10727 			write_unlock(&em_tree->lock);  in __btrfs_prealloc_file_range()