linux-ext4 - Re: [PATCH v4 2/2] ext4: add journal cycled recording support

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Date:   Fri, 17 Mar 2023 14:01:31 +0100
From:   Jan Kara <jack@...e.cz>
To:     Zhang Yi <yi.zhang@...weicloud.com>
Cc:     linux-ext4@...r.kernel.org, tytso@....edu,
        adilger.kernel@...ger.ca, jack@...e.cz, yi.zhang@...wei.com,
        yukuai3@...wei.com
Subject: Re: [PATCH v4 2/2] ext4: add journal cycled recording support

On Fri 17-03-23 17:09:26, Zhang Yi wrote:
> From: Zhang Yi <yi.zhang@...wei.com>
> 
> Always enable 'JBD2_CYCLE_RECORD' journal option on ext4, letting the
> jbd2 continue to record new journal transactions from the recovered
> journal head or the checkpointed transactions in the previous mount.
> 
> Signed-off-by: Zhang Yi <yi.zhang@...wei.com>

Looks good to me. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  fs/ext4/super.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index 88f7b8a88c76..9b46adae241b 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -5691,6 +5691,11 @@ static void ext4_init_journal_params(struct super_block *sb, journal_t *journal)
>  		journal->j_flags |= JBD2_ABORT_ON_SYNCDATA_ERR;
>  	else
>  		journal->j_flags &= ~JBD2_ABORT_ON_SYNCDATA_ERR;
> +	/*
> +	 * Always enable journal cycle record option, letting the journal
> +	 * records log transactions continuously between each mount.
> +	 */
> +	journal->j_flags |= JBD2_CYCLE_RECORD;
>  	write_unlock(&journal->j_state_lock);
>  }
>  
> -- 
> 2.31.1
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR