Re: [PATCH] libext2fs: reserve exclude bitmap fields in group descriptor

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On Thu, Sep 15, 2011 at 4:16 PM, Ted Ts'o <tytso@xxxxxxx> wrote:
> On Thu, Sep 15, 2011 at 09:50:20AM +0300, Amir Goldstein wrote:
>> -#define EXT2_FEATURE_COMPAT_EXCLUDE_INODE      0x0080
>> +/* #define EXT2_FEATURE_COMPAT_EXCLUDE_INODE   0x0080 not used */
>> +#define EXT2_FEATURE_COMPAT_EXCLUDE_BITMAP     0x0100
>
> Why this change?  Is it because you're already using 0x0100 in
> shipping systems?
>

I am using 0x80 in shipping systems and it signifies something a bit
different then
the proposed 0x100.

EXCLUDE_INODE means that special inode 9 is used to reference exclude
bitmap blocks.
EXCLUDE_BITMAP means that exclude bitmap blocks are referenced from
group descriptors.
With this distinction it will be easier for me to make the migration.

Thanks,
Amir.
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