回复: [PATCH 1/4] btrfs: use BTRFS_PATH_AUTO_FREE in insert_balance_item()

[李扬韬]

> This isn't a good idea at all.
> We're now committing a transaction while holding a write lock on some leaf of the tree root - this can result in a deadlock as the transaction commit needs to update the tree root (see update_cowonly_root()).>

Thx for pointing out it. I missed it......

Is there anything we need to modify about the del_balance_item function?

Yangtao