linux-kernel - Re: AZFS file system proposal

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Date:	Tue, 17 Jun 2008 17:51:39 +0200
From:	Jörn Engel <joern@...fs.org>
To:	Jan Engelhardt <jengelh@...ozas.de>
Cc:	Maxim Shchetynin <maxim@...ux.vnet.ibm.com>,
	linux-fsdevel@...r.kernel.org, Matthew Wilcox <matthew@....cx>,
	linux-kernel@...r.kernel.org
Subject: Re: AZFS file system proposal

On Tue, 17 June 2008 16:36:28 +0200, Jan Engelhardt wrote:
> 
> tmpfs plus XIP

That looks seriously disturbed.  Normal filesystems have a backing store
plus a page cache.  Tmpfs removes the backing store and keeps everything
in the page cache.  XIP removes the page cache and leaves everything in
the backing store - which is memory.

Would tmpfs plus XIP remove both the page cache and the backing store?

Jörn

-- 
Data dominates. If you've chosen the right data structures and organized
things well, the algorithms will almost always be self-evident. Data
structures, not algorithms, are central to programming.
-- Rob Pike
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