linux-kernel - 回复: [PATCH 1/4] btrfs: use BTRFS_PATH_AUTO_FREE in insert_balance

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Message-ID:
 <SEZPR06MB526943731C3673722458A426E8B42@SEZPR06MB5269.apcprd06.prod.outlook.com>
Date: Wed, 9 Apr 2025 12:19:40 +0000
From: 李扬韬 <frank.li@...o.com>
To: Filipe Manana <fdmanana@...nel.org>
CC: "clm@...com" <clm@...com>, "josef@...icpanda.com" <josef@...icpanda.com>,
	"dsterba@...e.com" <dsterba@...e.com>, "linux-btrfs@...r.kernel.org"
	<linux-btrfs@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject:
 回复: [PATCH 1/4] btrfs: use BTRFS_PATH_AUTO_FREE in insert_balance_item()

> 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