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

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Message-ID: <87sevrylmv.fsf@linux.dev>
Date: Tue, 30 Jul 2024 15:55:52 +0100
From: Luis Henriques <luis.henriques@...ux.dev>
To: Jan Kara <jack@...e.cz>
Cc: Kemeng Shi <shikemeng@...weicloud.com>,  tytso@....edu,  jack@...e.com,
  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 Tue, Jul 30 2024, Jan Kara wrote:

> On Tue 30-07-24 19:33:29, Kemeng Shi wrote:
>> Use tid_geq to compare tids to work over sequence number wraps.
>> 
>> Signed-off-by: Kemeng Shi <shikemeng@...weicloud.com>
>> ---
>>  fs/jbd2/journal.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> Indeed, Luis seems to have missed this when fixing these bugs recently.

Ah! It looks like I did missed it.  Thanks!

Cheers,
-- 
Luís

> Feel free to add:
>
> Reviewed-by: Jan Kara <jack@...e.cz>
>
> 								Honza
>
>> 
>> 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;
>>  	}
>> -- 
>> 2.30.0
>> 
> -- 
> Jan Kara <jack@...e.com>
> SUSE Labs, CR