1084 		struct extent_map_tree *em_tree;  in btrfs_remove_block_group()  local
1086 		em_tree = &fs_info->mapping_tree;  in btrfs_remove_block_group()
1087 		write_lock(&em_tree->lock);  in btrfs_remove_block_group()
1088 		remove_extent_mapping(em_tree, em);  in btrfs_remove_block_group()
1089 		write_unlock(&em_tree->lock);  in btrfs_remove_block_group()
1106 	struct extent_map_tree *em_tree = &fs_info->mapping_tree;  in btrfs_start_trans_remove_block_group()  local
1111 	read_lock(&em_tree->lock);  in btrfs_start_trans_remove_block_group()
1112 	em = lookup_extent_mapping(em_tree, chunk_offset, 1);  in btrfs_start_trans_remove_block_group()
1113 	read_unlock(&em_tree->lock);  in btrfs_start_trans_remove_block_group()
1605 	struct extent_map_tree *em_tree;  in read_bg_from_eb()  local
1616 	em_tree = &fs_info->mapping_tree;  in read_bg_from_eb()
1617 	read_lock(&em_tree->lock);  in read_bg_from_eb()
1618 	em = lookup_extent_mapping(em_tree, key->objectid, key->offset);  in read_bg_from_eb()
1619 	read_unlock(&em_tree->lock);  in read_bg_from_eb()
2082 	struct extent_map_tree *em_tree = &fs_info->mapping_tree;  in fill_dummy_bgs()  local
2087 	for (node = rb_first_cached(&em_tree->map); node; node = rb_next(node)) {  in fill_dummy_bgs()
3900 	struct extent_map_tree *em_tree;  in btrfs_unfreeze_block_group()  local
3910 		em_tree = &fs_info->mapping_tree;  in btrfs_unfreeze_block_group()
3911 		write_lock(&em_tree->lock);  in btrfs_unfreeze_block_group()
3912 		em = lookup_extent_mapping(em_tree, block_group->start,  in btrfs_unfreeze_block_group()
3915 		remove_extent_mapping(em_tree, em);  in btrfs_unfreeze_block_group()
3916 		write_unlock(&em_tree->lock);  in btrfs_unfreeze_block_group()