linux-ext4 - Re: [PATCH 1/7] jbd2: correctly compare tids with tid_geq function in jbd2_fc_begin

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Message-ID: <2209e7b1-999f-ce69-6d9f-4b825fa6f7d9@huaweicloud.com>
Date: Wed, 31 Jul 2024 11:24:46 +0800
From: Zhang Yi <yi.zhang@...weicloud.com>
To: Kemeng Shi <shikemeng@...weicloud.com>, tytso@....edu, jack@...e.com
Cc: linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/7] jbd2: correctly compare tids with tid_geq function in
 jbd2_fc_begin_commit

On 2024/7/30 19:33, Kemeng Shi wrote:
> Use tid_geq to compare tids to work over sequence number wraps.
> 
> Signed-off-by: Kemeng Shi <shikemeng@...weicloud.com>

Looks good to me.

Reviewed-by: Zhang Yi <yi.zhang@...wei.com>

> ---
>  fs/jbd2/journal.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
> index 1ebf2393bfb7..da5a56d700f1 100644
> --- a/fs/jbd2/journal.c
> +++ b/fs/jbd2/journal.c
> @@ -710,7 +710,7 @@ int jbd2_fc_begin_commit(journal_t *journal, tid_t tid)
>  		return -EINVAL;
>  
>  	write_lock(&journal->j_state_lock);
> -	if (tid <= journal->j_commit_sequence) {
> +	if (tid_geq(journal->j_commit_sequence, tid)) {
>  		write_unlock(&journal->j_state_lock);
>  		return -EALREADY;
>  	}
>