linux-kernel - Re: AZFS file system proposal

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Date:	Tue, 17 Jun 2008 16:36:28 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...ozas.de>
To:	Maxim Shchetynin <maxim@...ux.vnet.ibm.com>
cc:	linux-fsdevel@...r.kernel.org, Matthew Wilcox <matthew@....cx>,
	linux-kernel@...r.kernel.org
Subject: Re: AZFS file system proposal


On Tuesday 2008-06-17 13:57, Maxim Shchetynin wrote:

>> >> (a) What is axonram?
>> >> (b) why is axonram direct_access, and my other devices (including
>> >> standard PC RAM) not?
>> >
>> >[Axonram is a module specific for IBM CellBlade and allows access to
>> >a DDR2 memory attached onto Axon controller.] You don't need
>> >direct_access and not azfs for main memory because there is already
>> >a pretty nice tmpfs for it.
>> 
>> So the reason azfs could be useful is...?
>
>The "?" at the end of your sentence might mean a question. I would
>be really happy to give an answer on it if I could understand it.

If one does not need direct_access nor azfs, and ext2 plus XIP minus
caching or tmpfs plus XIP can achieve the same effect, what can azfs
that we could not already do without azfs?
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