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From: Naohiro Aota <Naohiro.Aota@wdc.com>
To: Johannes Thumshirn <Johannes.Thumshirn@wdc.com>
CC: Josef Bacik <josef@toxicpanda.com>, David Sterba <dsterba@suse.com>,
	"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Damien Le Moal
	<dlemoal@kernel.org>
Subject: Re: [PATCH 1/2] btrfs: zoned: use rcu list for iterating devices to
 collect stats
Thread-Topic: [PATCH 1/2] btrfs: zoned: use rcu list for iterating devices to
 collect stats
Thread-Index: AQHaTSDueMfLZECX/UiLJj78u0qsV7DlvkEA
Date: Mon, 22 Jan 2024 12:12:25 +0000
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References: <20240122-reclaim-fix-v1-0-761234a6d005@wdc.com>
 <20240122-reclaim-fix-v1-1-761234a6d005@wdc.com>
In-Reply-To: <20240122-reclaim-fix-v1-1-761234a6d005@wdc.com>
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On Mon, Jan 22, 2024 at 02:51:03AM -0800, Johannes Thumshirn wrote:
> As btrfs_zoned_should_reclaim only has to iterate the device list in orde=
r
> to collect stats on the device's total and used bytes, we don't need to
> take the full blown mutex, but can iterate the device list in a rcu_read
> context.
>=20
> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>

Looks good.

Reviewed-by: Naohiro Aota <naohiro.aota@wdc.com>=