121 static int init_first_rw_device(struct btrfs_trans_handle *trans,
1406 int find_free_dev_extent(struct btrfs_trans_handle *trans,  in find_free_dev_extent()  argument
1411 	return find_free_dev_extent_start(trans->transaction, device,  in find_free_dev_extent()
1415 static int btrfs_free_dev_extent(struct btrfs_trans_handle *trans,  in btrfs_free_dev_extent()  argument
1435 	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);  in btrfs_free_dev_extent()
1461 	ret = btrfs_del_item(trans, root, path);  in btrfs_free_dev_extent()
1466 		set_bit(BTRFS_TRANS_HAVE_FREE_BGS, &trans->transaction->flags);  in btrfs_free_dev_extent()
1473 static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,  in btrfs_alloc_dev_extent()  argument
1494 	ret = btrfs_insert_empty_item(trans, root, path, &key,  in btrfs_alloc_dev_extent()
1577 static int btrfs_add_device(struct btrfs_trans_handle *trans,  in btrfs_add_device()  argument
1598 	ret = btrfs_insert_empty_item(trans, root, path, &key,  in btrfs_add_device()
1655 	struct btrfs_trans_handle *trans;  in btrfs_rm_dev_item()  local
1663 	trans = btrfs_start_transaction(root, 0);  in btrfs_rm_dev_item()
1664 	if (IS_ERR(trans)) {  in btrfs_rm_dev_item()
1666 		return PTR_ERR(trans);  in btrfs_rm_dev_item()
1672 	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);  in btrfs_rm_dev_item()
1681 	ret = btrfs_del_item(trans, root, path);  in btrfs_rm_dev_item()
1686 	btrfs_commit_transaction(trans, root);  in btrfs_rm_dev_item()
2169 static int btrfs_finish_sprout(struct btrfs_trans_handle *trans,  in btrfs_finish_sprout()  argument
2192 		ret = btrfs_search_slot(trans, root, &key, path, 0, 1);  in btrfs_finish_sprout()
2244 	struct btrfs_trans_handle *trans;  in btrfs_init_new_device()  local
2298 	trans = btrfs_start_transaction(root, 0);  in btrfs_init_new_device()
2299 	if (IS_ERR(trans)) {  in btrfs_init_new_device()
2302 		ret = PTR_ERR(trans);  in btrfs_init_new_device()
2310 	device->generation = trans->transid;  in btrfs_init_new_device()
2373 		ret = init_first_rw_device(trans, root, device);  in btrfs_init_new_device()
2376 			btrfs_abort_transaction(trans, root, ret);  in btrfs_init_new_device()
2381 	ret = btrfs_add_device(trans, root, device);  in btrfs_init_new_device()
2383 		btrfs_abort_transaction(trans, root, ret);  in btrfs_init_new_device()
2390 		ret = btrfs_finish_sprout(trans, root);  in btrfs_init_new_device()
2392 			btrfs_abort_transaction(trans, root, ret);  in btrfs_init_new_device()
2409 	ret = btrfs_commit_transaction(trans, root);  in btrfs_init_new_device()
2424 		trans = btrfs_attach_transaction(root);  in btrfs_init_new_device()
2425 		if (IS_ERR(trans)) {  in btrfs_init_new_device()
2426 			if (PTR_ERR(trans) == -ENOENT)  in btrfs_init_new_device()
2428 			return PTR_ERR(trans);  in btrfs_init_new_device()
2430 		ret = btrfs_commit_transaction(trans, root);  in btrfs_init_new_device()
2438 	btrfs_end_transaction(trans, root);  in btrfs_init_new_device()
2558 static noinline int btrfs_update_device(struct btrfs_trans_handle *trans,  in btrfs_update_device()  argument
2578 	ret = btrfs_search_slot(trans, root, &key, path, 0, 1);  in btrfs_update_device()
2606 int btrfs_grow_device(struct btrfs_trans_handle *trans,  in btrfs_grow_device()  argument
2641 	return btrfs_update_device(trans, device);  in btrfs_grow_device()
2644 static int btrfs_free_chunk(struct btrfs_trans_handle *trans,  in btrfs_free_chunk()  argument
2661 	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);  in btrfs_free_chunk()
2671 	ret = btrfs_del_item(trans, root, path);  in btrfs_free_chunk()
2728 int btrfs_remove_chunk(struct btrfs_trans_handle *trans,  in btrfs_remove_chunk()  argument
2761 	check_system_chunk(trans, extent_root, map->type);  in btrfs_remove_chunk()
2766 		ret = btrfs_free_dev_extent(trans, device,  in btrfs_remove_chunk()
2770 			btrfs_abort_transaction(trans, root, ret);  in btrfs_remove_chunk()
2786 			ret = btrfs_update_device(trans, map->stripes[i].dev);  in btrfs_remove_chunk()
2788 				btrfs_abort_transaction(trans, root, ret);  in btrfs_remove_chunk()
2793 	ret = btrfs_free_chunk(trans, root, chunk_objectid, chunk_offset);  in btrfs_remove_chunk()
2795 		btrfs_abort_transaction(trans, root, ret);  in btrfs_remove_chunk()
2804 			btrfs_abort_transaction(trans, root, ret);  in btrfs_remove_chunk()
2809 	ret = btrfs_remove_block_group(trans, extent_root, chunk_offset, em);  in btrfs_remove_chunk()
2811 		btrfs_abort_transaction(trans, extent_root, ret);  in btrfs_remove_chunk()
2824 	struct btrfs_trans_handle *trans;  in btrfs_relocate_chunk()  local
2855 	trans = btrfs_start_trans_remove_block_group(root->fs_info,  in btrfs_relocate_chunk()
2857 	if (IS_ERR(trans)) {  in btrfs_relocate_chunk()
2858 		ret = PTR_ERR(trans);  in btrfs_relocate_chunk()
2867 	ret = btrfs_remove_chunk(trans, root, chunk_offset);  in btrfs_relocate_chunk()
2868 	btrfs_end_transaction(trans, root);  in btrfs_relocate_chunk()
2950 	struct btrfs_trans_handle *trans;  in insert_balance_item()  local
2962 	trans = btrfs_start_transaction(root, 0);  in insert_balance_item()
2963 	if (IS_ERR(trans)) {  in insert_balance_item()
2965 		return PTR_ERR(trans);  in insert_balance_item()
2972 	ret = btrfs_insert_empty_item(trans, root, path, &key,  in insert_balance_item()
2994 	err = btrfs_commit_transaction(trans, root);  in insert_balance_item()
3002 	struct btrfs_trans_handle *trans;  in del_balance_item()  local
3011 	trans = btrfs_start_transaction(root, 0);  in del_balance_item()
3012 	if (IS_ERR(trans)) {  in del_balance_item()
3014 		return PTR_ERR(trans);  in del_balance_item()
3021 	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);  in del_balance_item()
3029 	ret = btrfs_del_item(trans, root, path);  in del_balance_item()
3032 	err = btrfs_commit_transaction(trans, root);  in del_balance_item()
3390 	struct btrfs_trans_handle *trans;  in __btrfs_balance()  local
3422 		trans = btrfs_start_transaction(dev_root, 0);  in __btrfs_balance()
3423 		BUG_ON(IS_ERR(trans));  in __btrfs_balance()
3425 		ret = btrfs_grow_device(trans, device, old_size);  in __btrfs_balance()
3428 		btrfs_end_transaction(trans, dev_root);  in __btrfs_balance()
3543 			trans = btrfs_start_transaction(chunk_root, 0);  in __btrfs_balance()
3544 			if (IS_ERR(trans)) {  in __btrfs_balance()
3546 				ret = PTR_ERR(trans);  in __btrfs_balance()
3550 			ret = btrfs_force_chunk_alloc(trans, chunk_root,  in __btrfs_balance()
3552 			btrfs_end_transaction(trans, chunk_root);  in __btrfs_balance()
3996 	struct btrfs_trans_handle *trans = NULL;  in btrfs_uuid_scan_kthread()  local
4040 			if (trans)  in btrfs_uuid_scan_kthread()
4048 			trans = btrfs_start_transaction(fs_info->uuid_root, 2);  in btrfs_uuid_scan_kthread()
4049 			if (IS_ERR(trans)) {  in btrfs_uuid_scan_kthread()
4050 				ret = PTR_ERR(trans);  in btrfs_uuid_scan_kthread()
4059 			ret = btrfs_uuid_tree_add(trans, fs_info->uuid_root,  in btrfs_uuid_scan_kthread()
4071 			ret = btrfs_uuid_tree_add(trans, fs_info->uuid_root,  in btrfs_uuid_scan_kthread()
4083 		if (trans) {  in btrfs_uuid_scan_kthread()
4084 			ret = btrfs_end_transaction(trans, fs_info->uuid_root);  in btrfs_uuid_scan_kthread()
4085 			trans = NULL;  in btrfs_uuid_scan_kthread()
4108 	if (trans && !IS_ERR(trans))  in btrfs_uuid_scan_kthread()
4109 		btrfs_end_transaction(trans, fs_info->uuid_root);  in btrfs_uuid_scan_kthread()
4184 	struct btrfs_trans_handle *trans;  in btrfs_create_uuid_tree()  local
4194 	trans = btrfs_start_transaction(tree_root, 2);  in btrfs_create_uuid_tree()
4195 	if (IS_ERR(trans))  in btrfs_create_uuid_tree()
4196 		return PTR_ERR(trans);  in btrfs_create_uuid_tree()
4198 	uuid_root = btrfs_create_tree(trans, fs_info,  in btrfs_create_uuid_tree()
4202 		btrfs_abort_transaction(trans, tree_root, ret);  in btrfs_create_uuid_tree()
4208 	ret = btrfs_commit_transaction(trans, tree_root);  in btrfs_create_uuid_tree()
4247 	struct btrfs_trans_handle *trans;  in btrfs_shrink_device()  local
4349 	trans = btrfs_start_transaction(root, 0);  in btrfs_shrink_device()
4350 	if (IS_ERR(trans)) {  in btrfs_shrink_device()
4351 		ret = PTR_ERR(trans);  in btrfs_shrink_device()
4373 		if (contains_pending_extent(trans->transaction, device,  in btrfs_shrink_device()
4379 			ret = btrfs_commit_transaction(trans, root);  in btrfs_shrink_device()
4396 	ret = btrfs_update_device(trans, device);  in btrfs_shrink_device()
4397 	btrfs_end_transaction(trans, root);  in btrfs_shrink_device()
4485 static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,  in __btrfs_alloc_chunk()  argument
4600 		ret = find_free_dev_extent(trans, device,  in __btrfs_alloc_chunk()
4734 		list_add_tail(&em->list, &trans->transaction->pending_chunks);  in __btrfs_alloc_chunk()
4743 	ret = btrfs_make_block_group(trans, extent_root, 0, type,  in __btrfs_alloc_chunk()
4781 int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans,  in btrfs_finish_chunk_alloc()  argument
4832 		ret = btrfs_update_device(trans, device);  in btrfs_finish_chunk_alloc()
4835 		ret = btrfs_alloc_dev_extent(trans, device,  in btrfs_finish_chunk_alloc()
4869 	ret = btrfs_insert_item(trans, chunk_root, &key, chunk, item_size);  in btrfs_finish_chunk_alloc()
4892 int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,  in btrfs_alloc_chunk()  argument
4899 	return __btrfs_alloc_chunk(trans, extent_root, chunk_offset, type);  in btrfs_alloc_chunk()
4902 static noinline int init_first_rw_device(struct btrfs_trans_handle *trans,  in init_first_rw_device()  argument
4915 	ret = __btrfs_alloc_chunk(trans, extent_root, chunk_offset,  in init_first_rw_device()
4922 	ret = __btrfs_alloc_chunk(trans, extent_root, sys_chunk_offset,  in init_first_rw_device()
6700 static int update_dev_stat_item(struct btrfs_trans_handle *trans,  in update_dev_stat_item()  argument
6717 	ret = btrfs_search_slot(trans, dev_root, &key, path, -1, 1);  in update_dev_stat_item()
6728 		ret = btrfs_del_item(trans, dev_root, path);  in update_dev_stat_item()
6741 		ret = btrfs_insert_empty_item(trans, dev_root, path,  in update_dev_stat_item()
6766 int btrfs_run_dev_stats(struct btrfs_trans_handle *trans,  in btrfs_run_dev_stats()  argument
6781 		ret = update_dev_stat_item(trans, dev_root, device);  in btrfs_run_dev_stats()