From mboxrd@z Thu Jan  1 00:00:00 1970
From: hooanon05@yahoo.co.jp
Subject: Re: delta filesystem prototype
Date: Tue, 03 Mar 2009 17:31:57 +0900
Message-ID: <9884.1236069117@jrobl>
References: <E1LdQOr-0008RD-25@pomaz-ex.szeredi.hu>
Cc: linux-fsdevel@vger.kernel.org, fuse-devel@lists.sourceforge.net
To: Miklos Szeredi <miklos@szeredi.hu>
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Miklos Szeredi:
> Here is my first try at a "delta" filesystem.  It takes two
	:::
> Comments, bug reports are welcome.

As I wrote before, it is unclear how do you implment mmap.
I am afrid you need to copyup the entire file to support MAP_SHARED.

Since you don't care the inum, the hardlink will not work correctly. For
instance,
$ cd /base
$ echo a > a
$ ln a b
$ cd /deltafs
$ echo a >> a
$ cat b

By the way, are you going to review the aufs2-tmp-ro branch which I made
it responding you.


J. R. Okajima