linux-ext4 - Re: [PATCH 07/12] e2fsck: track ea

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Date:   Tue, 27 Jun 2017 12:43:42 -0600
From:   Andreas Dilger <adilger@...ger.ca>
To:     Tahsin Erdogan <tahsin@...gle.com>
Cc:     "Darrick J . Wong" <darrick.wong@...cle.com>,
        Theodore Ts'o <tytso@....edu>,
        Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH 07/12] e2fsck: track ea_inode references


> On Jun 26, 2017, at 7:25 PM, Tahsin Erdogan <tahsin@...gle.com> wrote:
> 
>>> +#ifdef EXT2_NO_64_TYPE
>>> +             fprintf(f, "%*u", width, ctx->num2);
>>> +#else
>>> +             fprintf(f, "%*llu", width, (long long)ctx->num2);
>>> #endif
>> 
>> Rather than a series of "#ifdef EXT2_NO_64_TYPE" checks, it would be cleaner
>> to have a single #define to set the printf type, like:
>> 
>> #ifdef EXT2_NO_64_TYPE
>> #define EXT2_64U "%*u"
>> #define EXT2_64D "%*d"
>> #define EXT2_64X "%*x"
>> #else
>> #define EXT2_64U "%*llu"
>> #define EXT2_64D "%*lld"
>> #define EXT2_64X "%*llx"
>> #endif
> 
> I am trying to figure out the purpose of #ifdef EXT2_NO_64_TYPE checks
> now. Who defines it and what problem does it solve?

Sorry, I can't answer that.  Git history shows that it has been around since
2000 but is not set by the configure script.  I just thought it made sense to
clean up the code, but it might be even better to get rid of it completely.

Cheers, Andreas






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