Re: reiser4 (was Re: [PATCH] Revised extended attributes interface)

From: Anton Altaparmakov (
Date: Wed Dec 12 2001 - 08:34:00 EST

At 12:02 12/12/01, Hans Reiser wrote:
>Anton Altaparmakov wrote:
>>On Wed, 12 Dec 2001, Hans Reiser wrote:
>>>Anton Altaparmakov wrote:
>>>>Both MacOS and as of recently Windows do this kind of stuff, too, and it
>>>>can't be long before Linux goes the same way, provided file systems
>>>>support the required features (i.e. EAs and/or named streams) so I
>>>>disagree with you this is only a compatibility thing. It might start out
>>>>as one but it will find real world applications very quickly...
>>>I am not saying that the features of EAs are not useful, I am saying
>>>that I want to choose them individually for particular files.
>>>It could be so much better to have EDIBLE_PIZZA (example from previous
>>>email) instead of just PIZZA, sigh.
>>I am not quite sure what you mean. Surely you can just have all features
>>available at all times/to all files and then you just use the ones you
>>want, just ignoring/not using the rest. Why do you see the need for
>>"selecting features of EAs individually for particular files"? It makes
>>sense when buying EDIBLE_PIZZA but I don't see how that can be transferred
>>onto files. After all I can just have all pizza ingredients and only put
>>the ones I want on the pizza just ignoring the others.
>Inheriting stat data from the parent directory should be a feature
>available not just for streams, but for all files that want it. Efficient
>small file access to a 32 byte file should be a feature available to all
>files, not just EAs. Not being listed in readdir should be a feature
>available to all files, not just EAs. Constraining what is written to
>them should be a feature available to all files, not just EAs, and
>arbitrary plugin based constraints should be possible.
>Is this more clear?

Yes it is, thanks. And yes it makes sense. But this is talking about files
as a whole and has nothing to do with EAs as such (but it would obviously
apply to EAs, too under your proposed API).

I will be looking forward to seeing this stuff implemented. (-:


   "I've not lost my mind. It's backed up on tape somewhere." - Unknown
Anton Altaparmakov <aia21 at> (replace at with @)
Linux NTFS Maintainer / WWW:
ICQ: 8561279 / WWW:

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This archive was generated by hypermail 2b29 : Sat Dec 15 2001 - 21:00:23 EST