108 	struct btrfs_root *root, *tmp;  in switch_commit_roots()  local
111 	list_for_each_entry_safe(root, tmp, &trans->switch_commits,  in switch_commit_roots()
113 		list_del_init(&root->dirty_list);  in switch_commit_roots()
114 		free_extent_buffer(root->commit_root);  in switch_commit_roots()
115 		root->commit_root = btrfs_root_node(root);  in switch_commit_roots()
116 		if (is_fstree(root->objectid))  in switch_commit_roots()
117 			btrfs_unpin_free_ino(root);  in switch_commit_roots()
118 		clear_btree_io_tree(&root->dirty_log_pages);  in switch_commit_roots()
151 static noinline int join_transaction(struct btrfs_root *root, unsigned int type)  in join_transaction()  argument
154 	struct btrfs_fs_info *fs_info = root->fs_info;  in join_transaction()
278 			       struct btrfs_root *root)  in record_root_in_trans()  argument
280 	if (test_bit(BTRFS_ROOT_REF_COWS, &root->state) &&  in record_root_in_trans()
281 	    root->last_trans < trans->transid) {  in record_root_in_trans()
282 		WARN_ON(root == root->fs_info->extent_root);  in record_root_in_trans()
283 		WARN_ON(root->commit_root != root->node);  in record_root_in_trans()
290 		set_bit(BTRFS_ROOT_IN_TRANS_SETUP, &root->state);  in record_root_in_trans()
297 		spin_lock(&root->fs_info->fs_roots_radix_lock);  in record_root_in_trans()
298 		if (root->last_trans == trans->transid) {  in record_root_in_trans()
299 			spin_unlock(&root->fs_info->fs_roots_radix_lock);  in record_root_in_trans()
302 		radix_tree_tag_set(&root->fs_info->fs_roots_radix,  in record_root_in_trans()
303 			   (unsigned long)root->root_key.objectid,  in record_root_in_trans()
305 		spin_unlock(&root->fs_info->fs_roots_radix_lock);  in record_root_in_trans()
306 		root->last_trans = trans->transid;  in record_root_in_trans()
327 		btrfs_init_reloc_root(trans, root);  in record_root_in_trans()
329 		clear_bit(BTRFS_ROOT_IN_TRANS_SETUP, &root->state);  in record_root_in_trans()
336 			       struct btrfs_root *root)  in btrfs_record_root_in_trans()  argument
338 	if (!test_bit(BTRFS_ROOT_REF_COWS, &root->state))  in btrfs_record_root_in_trans()
346 	if (root->last_trans == trans->transid &&  in btrfs_record_root_in_trans()
347 	    !test_bit(BTRFS_ROOT_IN_TRANS_SETUP, &root->state))  in btrfs_record_root_in_trans()
350 	mutex_lock(&root->fs_info->reloc_mutex);  in btrfs_record_root_in_trans()
351 	record_root_in_trans(trans, root);  in btrfs_record_root_in_trans()
352 	mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_record_root_in_trans()
368 static void wait_current_trans(struct btrfs_root *root)  in wait_current_trans()  argument
372 	spin_lock(&root->fs_info->trans_lock);  in wait_current_trans()
373 	cur_trans = root->fs_info->running_transaction;  in wait_current_trans()
376 		spin_unlock(&root->fs_info->trans_lock);  in wait_current_trans()
378 		wait_event(root->fs_info->transaction_wait,  in wait_current_trans()
383 		spin_unlock(&root->fs_info->trans_lock);  in wait_current_trans()
387 static int may_wait_transaction(struct btrfs_root *root, int type)  in may_wait_transaction()  argument
389 	if (root->fs_info->log_root_recovering)  in may_wait_transaction()
396 	    !atomic_read(&root->fs_info->open_ioctl_trans))  in may_wait_transaction()
402 static inline bool need_reserve_reloc_root(struct btrfs_root *root)  in need_reserve_reloc_root()  argument
404 	if (!root->fs_info->reloc_ctl ||  in need_reserve_reloc_root()
405 	    !test_bit(BTRFS_ROOT_REF_COWS, &root->state) ||  in need_reserve_reloc_root()
406 	    root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID ||  in need_reserve_reloc_root()
407 	    root->reloc_root)  in need_reserve_reloc_root()
414 start_transaction(struct btrfs_root *root, u64 num_items, unsigned int type,  in start_transaction()  argument
427 	if (test_bit(BTRFS_FS_STATE_ERROR, &root->fs_info->fs_state))  in start_transaction()
444 	if (num_items > 0 && root != root->fs_info->chunk_root) {  in start_transaction()
445 		if (root->fs_info->quota_enabled &&  in start_transaction()
446 		    is_fstree(root->root_key.objectid)) {  in start_transaction()
447 			qgroup_reserved = num_items * root->nodesize;  in start_transaction()
448 			ret = btrfs_qgroup_reserve(root, qgroup_reserved);  in start_transaction()
453 		num_bytes = btrfs_calc_trans_metadata_size(root, num_items);  in start_transaction()
457 		if (need_reserve_reloc_root(root)) {  in start_transaction()
458 			num_bytes += root->nodesize;  in start_transaction()
462 		ret = btrfs_block_rsv_add(root,  in start_transaction()
463 					  &root->fs_info->trans_block_rsv,  in start_transaction()
486 		sb_start_intwrite(root->fs_info->sb);  in start_transaction()
488 	if (may_wait_transaction(root, type))  in start_transaction()
489 		wait_current_trans(root);  in start_transaction()
492 		ret = join_transaction(root, type);  in start_transaction()
494 			wait_current_trans(root);  in start_transaction()
506 	cur_trans = root->fs_info->running_transaction;  in start_transaction()
512 	h->root = root;  in start_transaction()
531 	    may_wait_transaction(root, type)) {  in start_transaction()
533 		btrfs_commit_transaction(h, root);  in start_transaction()
538 		trace_btrfs_space_reservation(root->fs_info, "transaction",  in start_transaction()
540 		h->block_rsv = &root->fs_info->trans_block_rsv;  in start_transaction()
547 	btrfs_record_root_in_trans(h, root);  in start_transaction()
555 		sb_end_intwrite(root->fs_info->sb);  in start_transaction()
559 		btrfs_block_rsv_release(root, &root->fs_info->trans_block_rsv,  in start_transaction()
563 		btrfs_qgroup_free(root, qgroup_reserved);  in start_transaction()
567 struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,  in btrfs_start_transaction()  argument
570 	return start_transaction(root, num_items, TRANS_START,  in btrfs_start_transaction()
575 					struct btrfs_root *root, int num_items)  in btrfs_start_transaction_lflush()  argument
577 	return start_transaction(root, num_items, TRANS_START,  in btrfs_start_transaction_lflush()
581 struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root)  in btrfs_join_transaction()  argument
583 	return start_transaction(root, 0, TRANS_JOIN, 0);  in btrfs_join_transaction()
586 struct btrfs_trans_handle *btrfs_join_transaction_nolock(struct btrfs_root *root)  in btrfs_join_transaction_nolock()  argument
588 	return start_transaction(root, 0, TRANS_JOIN_NOLOCK, 0);  in btrfs_join_transaction_nolock()
591 struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *root)  in btrfs_start_ioctl_transaction()  argument
593 	return start_transaction(root, 0, TRANS_USERSPACE, 0);  in btrfs_start_ioctl_transaction()
609 struct btrfs_trans_handle *btrfs_attach_transaction(struct btrfs_root *root)  in btrfs_attach_transaction()  argument
611 	return start_transaction(root, 0, TRANS_ATTACH, 0);  in btrfs_attach_transaction()
622 btrfs_attach_transaction_barrier(struct btrfs_root *root)  in btrfs_attach_transaction_barrier()  argument
626 	trans = start_transaction(root, 0, TRANS_ATTACH, 0);  in btrfs_attach_transaction_barrier()
628 		btrfs_wait_for_commit(root, 0);  in btrfs_attach_transaction_barrier()
634 static noinline void wait_for_commit(struct btrfs_root *root,  in wait_for_commit()  argument
640 int btrfs_wait_for_commit(struct btrfs_root *root, u64 transid)  in btrfs_wait_for_commit()  argument
646 		if (transid <= root->fs_info->last_trans_committed)  in btrfs_wait_for_commit()
650 		spin_lock(&root->fs_info->trans_lock);  in btrfs_wait_for_commit()
651 		list_for_each_entry(t, &root->fs_info->trans_list, list) {  in btrfs_wait_for_commit()
663 		spin_unlock(&root->fs_info->trans_lock);  in btrfs_wait_for_commit()
670 			if (transid > root->fs_info->last_trans_committed)  in btrfs_wait_for_commit()
676 		spin_lock(&root->fs_info->trans_lock);  in btrfs_wait_for_commit()
677 		list_for_each_entry_reverse(t, &root->fs_info->trans_list,  in btrfs_wait_for_commit()
687 		spin_unlock(&root->fs_info->trans_lock);  in btrfs_wait_for_commit()
692 	wait_for_commit(root, cur_trans);  in btrfs_wait_for_commit()
698 void btrfs_throttle(struct btrfs_root *root)  in btrfs_throttle()  argument
700 	if (!atomic_read(&root->fs_info->open_ioctl_trans))  in btrfs_throttle()
701 		wait_current_trans(root);  in btrfs_throttle()
705 				  struct btrfs_root *root)  in should_end_transaction()  argument
707 	if (root->fs_info->global_block_rsv.space_info->full &&  in should_end_transaction()
708 	    btrfs_check_space_for_delayed_refs(trans, root))  in should_end_transaction()
711 	return !!btrfs_block_rsv_check(root, &root->fs_info->global_block_rsv, 5);  in should_end_transaction()
715 				 struct btrfs_root *root)  in btrfs_should_end_transaction()  argument
729 		err = btrfs_run_delayed_refs(trans, root, updates * 2);  in btrfs_should_end_transaction()
734 	return should_end_transaction(trans, root);  in btrfs_should_end_transaction()
738 			  struct btrfs_root *root, int throttle)  in __btrfs_end_transaction()  argument
741 	struct btrfs_fs_info *info = root->fs_info;  in __btrfs_end_transaction()
753 	btrfs_trans_release_metadata(trans, root);  in __btrfs_end_transaction()
757 		btrfs_create_pending_block_groups(trans, root);  in __btrfs_end_transaction()
768 			btrfs_should_throttle_delayed_refs(trans, root);  in __btrfs_end_transaction()
785 		btrfs_qgroup_free(trans->root, trans->qgroup_reserved);  in __btrfs_end_transaction()
789 	btrfs_trans_release_metadata(trans, root);  in __btrfs_end_transaction()
793 		btrfs_create_pending_block_groups(trans, root);  in __btrfs_end_transaction()
795 	if (lock && !atomic_read(&root->fs_info->open_ioctl_trans) &&  in __btrfs_end_transaction()
796 	    should_end_transaction(trans, root) &&  in __btrfs_end_transaction()
806 			return btrfs_commit_transaction(trans, root);  in __btrfs_end_transaction()
812 		sb_end_intwrite(root->fs_info->sb);  in __btrfs_end_transaction()
828 		btrfs_run_delayed_iputs(root);  in __btrfs_end_transaction()
831 	    test_bit(BTRFS_FS_STATE_ERROR, &root->fs_info->fs_state)) {  in __btrfs_end_transaction()
839 		btrfs_async_run_delayed_refs(root, cur,  in __btrfs_end_transaction()
846 			  struct btrfs_root *root)  in btrfs_end_transaction()  argument
848 	return __btrfs_end_transaction(trans, root, 0);  in btrfs_end_transaction()
852 				   struct btrfs_root *root)  in btrfs_end_transaction_throttle()  argument
854 	return __btrfs_end_transaction(trans, root, 1);  in btrfs_end_transaction_throttle()
862 int btrfs_write_marked_extents(struct btrfs_root *root,  in btrfs_write_marked_extents()  argument
867 	struct address_space *mapping = root->fs_info->btree_inode->i_mapping;  in btrfs_write_marked_extents()
916 int btrfs_wait_marked_extents(struct btrfs_root *root,  in btrfs_wait_marked_extents()  argument
921 	struct address_space *mapping = root->fs_info->btree_inode->i_mapping;  in btrfs_wait_marked_extents()
925 	struct btrfs_inode *btree_ino = BTRFS_I(root->fs_info->btree_inode);  in btrfs_wait_marked_extents()
955 	if (root->root_key.objectid == BTRFS_TREE_LOG_OBJECTID) {  in btrfs_wait_marked_extents()
982 static int btrfs_write_and_wait_marked_extents(struct btrfs_root *root,  in btrfs_write_and_wait_marked_extents()  argument
990 	ret = btrfs_write_marked_extents(root, dirty_pages, mark);  in btrfs_write_and_wait_marked_extents()
992 	ret2 = btrfs_wait_marked_extents(root, dirty_pages, mark);  in btrfs_write_and_wait_marked_extents()
1002 				     struct btrfs_root *root)  in btrfs_write_and_wait_transaction()  argument
1006 	ret = btrfs_write_and_wait_marked_extents(root,  in btrfs_write_and_wait_transaction()
1025 			       struct btrfs_root *root)  in update_cowonly_root()  argument
1030 	struct btrfs_root *tree_root = root->fs_info->tree_root;  in update_cowonly_root()
1032 	old_root_used = btrfs_root_used(&root->root_item);  in update_cowonly_root()
1035 		old_root_bytenr = btrfs_root_bytenr(&root->root_item);  in update_cowonly_root()
1036 		if (old_root_bytenr == root->node->start &&  in update_cowonly_root()
1037 		    old_root_used == btrfs_root_used(&root->root_item))  in update_cowonly_root()
1040 		btrfs_set_root_node(&root->root_item, root->node);  in update_cowonly_root()
1042 					&root->root_key,  in update_cowonly_root()
1043 					&root->root_item);  in update_cowonly_root()
1047 		old_root_used = btrfs_root_used(&root->root_item);  in update_cowonly_root()
1061 					 struct btrfs_root *root)  in commit_cowonly_roots()  argument
1063 	struct btrfs_fs_info *fs_info = root->fs_info;  in commit_cowonly_roots()
1079 	ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);  in commit_cowonly_roots()
1083 	ret = btrfs_run_dev_stats(trans, root->fs_info);  in commit_cowonly_roots()
1086 	ret = btrfs_run_dev_replace(trans, root->fs_info);  in commit_cowonly_roots()
1089 	ret = btrfs_run_qgroups(trans, root->fs_info);  in commit_cowonly_roots()
1093 	ret = btrfs_setup_space_cache(trans, root);  in commit_cowonly_roots()
1098 	ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);  in commit_cowonly_roots()
1105 		root = list_entry(next, struct btrfs_root, dirty_list);  in commit_cowonly_roots()
1106 		clear_bit(BTRFS_ROOT_DIRTY, &root->state);  in commit_cowonly_roots()
1108 		if (root != fs_info->extent_root)  in commit_cowonly_roots()
1109 			list_add_tail(&root->dirty_list,  in commit_cowonly_roots()
1111 		ret = update_cowonly_root(trans, root);  in commit_cowonly_roots()
1114 		ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);  in commit_cowonly_roots()
1120 		ret = btrfs_write_dirty_block_groups(trans, root);  in commit_cowonly_roots()
1123 		ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);  in commit_cowonly_roots()
1143 void btrfs_add_dead_root(struct btrfs_root *root)  in btrfs_add_dead_root()  argument
1145 	spin_lock(&root->fs_info->trans_lock);  in btrfs_add_dead_root()
1146 	if (list_empty(&root->root_list))  in btrfs_add_dead_root()
1147 		list_add_tail(&root->root_list, &root->fs_info->dead_roots);  in btrfs_add_dead_root()
1148 	spin_unlock(&root->fs_info->trans_lock);  in btrfs_add_dead_root()
1155 				    struct btrfs_root *root)  in commit_fs_roots()  argument
1158 	struct btrfs_fs_info *fs_info = root->fs_info;  in commit_fs_roots()
1172 			root = gang[i];  in commit_fs_roots()
1174 					(unsigned long)root->root_key.objectid,  in commit_fs_roots()
1178 			btrfs_free_log(trans, root);  in commit_fs_roots()
1179 			btrfs_update_reloc_root(trans, root);  in commit_fs_roots()
1180 			btrfs_orphan_commit_root(trans, root);  in commit_fs_roots()
1182 			btrfs_save_ino_cache(root, trans);  in commit_fs_roots()
1185 			clear_bit(BTRFS_ROOT_FORCE_COW, &root->state);  in commit_fs_roots()
1188 			if (root->commit_root != root->node) {  in commit_fs_roots()
1189 				list_add_tail(&root->dirty_list,  in commit_fs_roots()
1191 				btrfs_set_root_node(&root->root_item,  in commit_fs_roots()
1192 						    root->node);  in commit_fs_roots()
1196 						&root->root_key,  in commit_fs_roots()
1197 						&root->root_item);  in commit_fs_roots()
1211 int btrfs_defrag_root(struct btrfs_root *root)  in btrfs_defrag_root()  argument
1213 	struct btrfs_fs_info *info = root->fs_info;  in btrfs_defrag_root()
1217 	if (test_and_set_bit(BTRFS_ROOT_DEFRAG_RUNNING, &root->state))  in btrfs_defrag_root()
1221 		trans = btrfs_start_transaction(root, 0);  in btrfs_defrag_root()
1225 		ret = btrfs_defrag_leaves(trans, root);  in btrfs_defrag_root()
1227 		btrfs_end_transaction(trans, root);  in btrfs_defrag_root()
1231 		if (btrfs_fs_closing(root->fs_info) || ret != -EAGAIN)  in btrfs_defrag_root()
1234 		if (btrfs_defrag_cancelled(root->fs_info)) {  in btrfs_defrag_root()
1240 	clear_bit(BTRFS_ROOT_DEFRAG_RUNNING, &root->state);  in btrfs_defrag_root()
1260 	struct btrfs_root *root = pending->root;  in create_pending_snapshot()  local
1296 		pending->error = btrfs_block_rsv_add(root,  in create_pending_snapshot()
1314 	parent_root = BTRFS_I(parent_inode)->root;  in create_pending_snapshot()
1333 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1344 	ret = btrfs_run_delayed_items(trans, root);  in create_pending_snapshot()
1346 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1350 	record_root_in_trans(trans, root);  in create_pending_snapshot()
1351 	btrfs_set_root_last_snapshot(&root->root_item, trans->transid);  in create_pending_snapshot()
1352 	memcpy(new_root_item, &root->root_item, sizeof(*new_root_item));  in create_pending_snapshot()
1366 	memcpy(new_root_item->parent_uuid, root->root_item.uuid,  in create_pending_snapshot()
1380 	old = btrfs_lock_root_node(root);  in create_pending_snapshot()
1381 	ret = btrfs_cow_block(trans, root, old, NULL, 0, &old);  in create_pending_snapshot()
1385 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1391 	ret = btrfs_copy_root(trans, root, old, &tmp, objectid);  in create_pending_snapshot()
1396 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1404 	ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);  in create_pending_snapshot()
1406 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1411 				   root->root_key.objectid,  in create_pending_snapshot()
1414 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1419 	set_bit(BTRFS_ROOT_FORCE_COW, &root->state);  in create_pending_snapshot()
1429 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1441 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1446 	pending->snap = btrfs_read_fs_root_no_name(root->fs_info, &key);  in create_pending_snapshot()
1449 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1455 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1459 	ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);  in create_pending_snapshot()
1461 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1472 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1481 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1487 		btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1496 			btrfs_abort_transaction(trans, root, ret);  in create_pending_snapshot()
1531 static void update_super_roots(struct btrfs_root *root)  in update_super_roots()  argument
1536 	super = root->fs_info->super_copy;  in update_super_roots()
1538 	root_item = &root->fs_info->chunk_root->root_item;  in update_super_roots()
1543 	root_item = &root->fs_info->tree_root->root_item;  in update_super_roots()
1544 	super->root = root_item->bytenr;  in update_super_roots()
1547 	if (btrfs_test_opt(root, SPACE_CACHE))  in update_super_roots()
1549 	if (root->fs_info->update_uuid_tree_gen)  in update_super_roots()
1583 static void wait_current_trans_commit_start(struct btrfs_root *root,  in wait_current_trans_commit_start()  argument
1586 	wait_event(root->fs_info->transaction_blocked_wait,  in wait_current_trans_commit_start()
1595 static void wait_current_trans_commit_start_and_unblock(struct btrfs_root *root,  in wait_current_trans_commit_start_and_unblock()  argument
1598 	wait_event(root->fs_info->transaction_wait,  in wait_current_trans_commit_start_and_unblock()
1609 	struct btrfs_root *root;  member
1624 		     &ac->root->fs_info->sb->s_writers.lock_map[SB_FREEZE_FS-1],  in do_async_commit()
1629 	btrfs_commit_transaction(ac->newtrans, ac->root);  in do_async_commit()
1634 				   struct btrfs_root *root,  in btrfs_commit_transaction_async()  argument
1645 	ac->root = root;  in btrfs_commit_transaction_async()
1646 	ac->newtrans = btrfs_join_transaction(root);  in btrfs_commit_transaction_async()
1657 	btrfs_end_transaction(trans, root);  in btrfs_commit_transaction_async()
1665 			&root->fs_info->sb->s_writers.lock_map[SB_FREEZE_FS-1],  in btrfs_commit_transaction_async()
1672 		wait_current_trans_commit_start_and_unblock(root, cur_trans);  in btrfs_commit_transaction_async()
1674 		wait_current_trans_commit_start(root, cur_trans);  in btrfs_commit_transaction_async()
1685 				struct btrfs_root *root, int err)  in cleanup_transaction()  argument
1692 	btrfs_abort_transaction(trans, root, err);  in cleanup_transaction()
1694 	spin_lock(&root->fs_info->trans_lock);  in cleanup_transaction()
1704 	if (cur_trans == root->fs_info->running_transaction) {  in cleanup_transaction()
1706 		spin_unlock(&root->fs_info->trans_lock);  in cleanup_transaction()
1710 		spin_lock(&root->fs_info->trans_lock);  in cleanup_transaction()
1712 	spin_unlock(&root->fs_info->trans_lock);  in cleanup_transaction()
1714 	btrfs_cleanup_one_transaction(trans->transaction, root);  in cleanup_transaction()
1716 	spin_lock(&root->fs_info->trans_lock);  in cleanup_transaction()
1717 	if (cur_trans == root->fs_info->running_transaction)  in cleanup_transaction()
1718 		root->fs_info->running_transaction = NULL;  in cleanup_transaction()
1719 	spin_unlock(&root->fs_info->trans_lock);  in cleanup_transaction()
1722 		sb_end_intwrite(root->fs_info->sb);  in cleanup_transaction()
1726 	trace_btrfs_transaction_commit(root);  in cleanup_transaction()
1730 	btrfs_scrub_cancel(root->fs_info);  in cleanup_transaction()
1771 			     struct btrfs_root *root)  in btrfs_commit_transaction()  argument
1775 	struct btrfs_inode *btree_ino = BTRFS_I(root->fs_info->btree_inode);  in btrfs_commit_transaction()
1781 		btrfs_end_transaction(trans, root);  in btrfs_commit_transaction()
1788 	ret = btrfs_run_delayed_refs(trans, root, 0);  in btrfs_commit_transaction()
1790 		btrfs_end_transaction(trans, root);  in btrfs_commit_transaction()
1794 	btrfs_trans_release_metadata(trans, root);  in btrfs_commit_transaction()
1797 		btrfs_qgroup_free(root, trans->qgroup_reserved);  in btrfs_commit_transaction()
1811 		btrfs_create_pending_block_groups(trans, root);  in btrfs_commit_transaction()
1813 	ret = btrfs_run_delayed_refs(trans, root, 0);  in btrfs_commit_transaction()
1815 		btrfs_end_transaction(trans, root);  in btrfs_commit_transaction()
1835 		mutex_lock(&root->fs_info->ro_block_group_mutex);  in btrfs_commit_transaction()
1840 		mutex_unlock(&root->fs_info->ro_block_group_mutex);  in btrfs_commit_transaction()
1843 			ret = btrfs_start_dirty_block_groups(trans, root);  in btrfs_commit_transaction()
1846 		btrfs_end_transaction(trans, root);  in btrfs_commit_transaction()
1850 	spin_lock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1853 		spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1855 		ret = btrfs_end_transaction(trans, root);  in btrfs_commit_transaction()
1857 		wait_for_commit(root, cur_trans);  in btrfs_commit_transaction()
1868 	wake_up(&root->fs_info->transaction_blocked_wait);  in btrfs_commit_transaction()
1870 	if (cur_trans->list.prev != &root->fs_info->trans_list) {  in btrfs_commit_transaction()
1875 			spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1877 			wait_for_commit(root, prev_trans);  in btrfs_commit_transaction()
1884 			spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1887 		spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1892 	ret = btrfs_start_delalloc_flush(root->fs_info);  in btrfs_commit_transaction()
1896 	ret = btrfs_run_delayed_items(trans, root);  in btrfs_commit_transaction()
1904 	ret = btrfs_run_delayed_items(trans, root);  in btrfs_commit_transaction()
1908 	btrfs_wait_delalloc_flush(root->fs_info);  in btrfs_commit_transaction()
1910 	btrfs_wait_pending_ordered(cur_trans, root->fs_info);  in btrfs_commit_transaction()
1912 	btrfs_scrub_pause(root);  in btrfs_commit_transaction()
1918 	spin_lock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1920 	spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1934 	mutex_lock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
1941 	ret = create_pending_snapshots(trans, root->fs_info);  in btrfs_commit_transaction()
1943 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
1957 	ret = btrfs_run_delayed_items(trans, root);  in btrfs_commit_transaction()
1959 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
1963 	ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);  in btrfs_commit_transaction()
1965 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
1973 	btrfs_assert_delayed_root_empty(root);  in btrfs_commit_transaction()
1990 	mutex_lock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
1992 	ret = commit_fs_roots(trans, root);  in btrfs_commit_transaction()
1994 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
1995 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2003 	btrfs_apply_pending_changes(root->fs_info);  in btrfs_commit_transaction()
2008 	btrfs_free_log_root_tree(trans, root->fs_info);  in btrfs_commit_transaction()
2010 	ret = commit_cowonly_roots(trans, root);  in btrfs_commit_transaction()
2012 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2013 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2023 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2024 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2028 	btrfs_prepare_extent_commit(trans, root);  in btrfs_commit_transaction()
2030 	cur_trans = root->fs_info->running_transaction;  in btrfs_commit_transaction()
2032 	btrfs_set_root_node(&root->fs_info->tree_root->root_item,  in btrfs_commit_transaction()
2033 			    root->fs_info->tree_root->node);  in btrfs_commit_transaction()
2034 	list_add_tail(&root->fs_info->tree_root->dirty_list,  in btrfs_commit_transaction()
2037 	btrfs_set_root_node(&root->fs_info->chunk_root->root_item,  in btrfs_commit_transaction()
2038 			    root->fs_info->chunk_root->node);  in btrfs_commit_transaction()
2039 	list_add_tail(&root->fs_info->chunk_root->dirty_list,  in btrfs_commit_transaction()
2042 	switch_commit_roots(cur_trans, root->fs_info);  in btrfs_commit_transaction()
2047 	update_super_roots(root);  in btrfs_commit_transaction()
2049 	btrfs_set_super_log_root(root->fs_info->super_copy, 0);  in btrfs_commit_transaction()
2050 	btrfs_set_super_log_root_level(root->fs_info->super_copy, 0);  in btrfs_commit_transaction()
2051 	memcpy(root->fs_info->super_for_commit, root->fs_info->super_copy,  in btrfs_commit_transaction()
2052 	       sizeof(*root->fs_info->super_copy));  in btrfs_commit_transaction()
2054 	btrfs_update_commit_device_size(root->fs_info);  in btrfs_commit_transaction()
2055 	btrfs_update_commit_device_bytes_used(root, cur_trans);  in btrfs_commit_transaction()
2060 	spin_lock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
2062 	root->fs_info->running_transaction = NULL;  in btrfs_commit_transaction()
2063 	spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
2064 	mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2066 	wake_up(&root->fs_info->transaction_wait);  in btrfs_commit_transaction()
2068 	ret = btrfs_write_and_wait_transaction(trans, root);  in btrfs_commit_transaction()
2070 		btrfs_error(root->fs_info, ret,  in btrfs_commit_transaction()
2072 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2076 	ret = write_ctree_super(trans, root, 0);  in btrfs_commit_transaction()
2078 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2086 	mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2088 	btrfs_finish_extent_commit(trans, root);  in btrfs_commit_transaction()
2091 		btrfs_clear_space_info_full(root->fs_info);  in btrfs_commit_transaction()
2093 	root->fs_info->last_trans_committed = cur_trans->transid;  in btrfs_commit_transaction()
2101 	spin_lock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
2103 	spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
2109 		sb_end_intwrite(root->fs_info->sb);  in btrfs_commit_transaction()
2111 	trace_btrfs_transaction_commit(root);  in btrfs_commit_transaction()
2113 	btrfs_scrub_continue(root);  in btrfs_commit_transaction()
2120 	if (current != root->fs_info->transaction_kthread)  in btrfs_commit_transaction()
2121 		btrfs_run_delayed_iputs(root);  in btrfs_commit_transaction()
2126 	btrfs_scrub_continue(root);  in btrfs_commit_transaction()
2128 	btrfs_trans_release_metadata(trans, root);  in btrfs_commit_transaction()
2131 		btrfs_qgroup_free(root, trans->qgroup_reserved);  in btrfs_commit_transaction()
2134 	btrfs_warn(root->fs_info, "Skipping commit of aborted transaction.");  in btrfs_commit_transaction()
2137 	cleanup_transaction(trans, root, ret);  in btrfs_commit_transaction()
2152 int btrfs_clean_one_deleted_snapshot(struct btrfs_root *root)  in btrfs_clean_one_deleted_snapshot()  argument
2155 	struct btrfs_fs_info *fs_info = root->fs_info;  in btrfs_clean_one_deleted_snapshot()
2162 	root = list_first_entry(&fs_info->dead_roots,  in btrfs_clean_one_deleted_snapshot()
2164 	list_del_init(&root->root_list);  in btrfs_clean_one_deleted_snapshot()
2167 	pr_debug("BTRFS: cleaner removing %llu\n", root->objectid);  in btrfs_clean_one_deleted_snapshot()
2169 	btrfs_kill_all_delayed_nodes(root);  in btrfs_clean_one_deleted_snapshot()
2171 	if (btrfs_header_backref_rev(root->node) <  in btrfs_clean_one_deleted_snapshot()
2173 		ret = btrfs_drop_snapshot(root, NULL, 0, 0);  in btrfs_clean_one_deleted_snapshot()
2175 		ret = btrfs_drop_snapshot(root, NULL, 1, 0);  in btrfs_clean_one_deleted_snapshot()