linux-kernel - Re: [PATCH 0/9] overlay filesystem: request for inclusion (v17)

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Message-ID: <20130315051322.GX21522@ZenIV.linux.org.uk>
Date:	Fri, 15 Mar 2013 05:13:23 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	"J. R. Okajima" <hooanon05@...oo.co.jp>
Cc:	Miklos Szeredi <miklos@...redi.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	torvalds@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, hch@...radead.org, apw@...onical.com,
	nbd@...nwrt.org, neilb@...e.de, jordipujolp@...il.com,
	ezk@....cs.sunysb.edu, dhowells@...hat.com,
	sedat.dilek@...glemail.com, mszeredi@...e.cz
Subject: Re: [PATCH 0/9] overlay filesystem: request for inclusion (v17)

On Fri, Mar 15, 2013 at 02:09:14PM +0900, J. R. Okajima wrote:

> If so, it has a big disadvantage for the layer-fs (or branch-fs) to have
> to implement a new method for whiteout.
> 
> Overlayfs implements whiteout as symlink+xattr which consumes an
> inode. And you don't like it, right?
> What I showed is another generic approach without xattr where the new
> method to whiteout is unnecessary.

I'm yet to see the reason that would make implementing that method a big
disadvantage, TBH...
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