linux-ext4 - Re: [PATCH 02/13] ext4: remove cantfind

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Date:   Thu, 1 Sep 2022 15:42:35 +0800
From:   Jason Yan <yanaijie@...wei.com>
To:     Jan Kara <jack@...e.cz>
CC:     <tytso@....edu>, <adilger.kernel@...ger.ca>,
        <ritesh.list@...il.com>, <lczerner@...hat.com>,
        <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH 02/13] ext4: remove cantfind_ext4 error handler


On 2022/8/31 19:41, Jan Kara wrote:
> On Tue 30-08-22 20:04:00, Jason Yan wrote:
>> The 'cantfind_ext4' error handler is just a error msg print and then
>> goto failed_mount. This two level goto makes the code complex and not
>> easy to read. The only benefit is that is saves a little bit code.
>> However some branches can merge and some branches dot not even need it.
>> So do some refactor and remove it.
>>
>> Signed-off-by: Jason Yan <yanaijie@...wei.com>
> 
> Yeah, probably makes sense. Just small style nits below. Feel free to add:
> 
> Reviewed-by: Jan Kara <jack@...e.cz>
> 
>> @@ -4798,8 +4800,11 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
>>   	sbi->s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group);
>>   
>>   	sbi->s_inodes_per_block = blocksize / EXT4_INODE_SIZE(sb);
>> -	if (sbi->s_inodes_per_block == 0)
>> -		goto cantfind_ext4;
>> +	if (sbi->s_inodes_per_block == 0 || (EXT4_BLOCKS_PER_GROUP(sb) == 0)) {
> 
> I'd write this as:
> 
> 	if (sbi->s_inodes_per_block == 0 || sbi->s_blocks_per_group == 0) {
> 
> to avoid superfluous braces and make the code a bit more natural.
> 
> 									Honza


Good suggestion. Will update.

Thanks.