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SubjectRe: [RFC][PATCH 13/14] ext3 whiteout support
On Mon, May 14, 2007 at 10:35:47PM +0200, Jan Blunck wrote:
>
> I don't know. I tried to contact him a few weeks ago but failed.
> Guess, maybe he isn't reading the @thunk.org email anymore which was
> reference in the e2fsprogs source I used.

I do pay more attention to mail sent to the @mit.edu address, but I
don't recall any reservation requests sent to my @thunk.org address
(nope, don't see it; maybe it got caught in my spam filters? When did
you send it, precisely?)

> Ted,
> from ext2_fs.h I learn that the value 0x0020 is left unused.
>
> #define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
> #define EXT3_FEATURE_INCOMPAT_EXTENTS 0x0040
> #define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
>
> Is this intentionally?

I think 0x0020 was used at one point, but I can't remember what it was
used for. It's almost certainly not in wide use at this point, so
it's probably safe to use it; OTOH it's not like we're running out of
bits at this point.

- Ted

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