linux-ext4 - Re: [PATCH 13/35] fallthru: ext2 fallthru support

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Message-ID: <20100420213450.GM11723@shareable.org>
Date:	Tue, 20 Apr 2010 22:34:50 +0100
From:	Jamie Lokier <jamie@...reable.org>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	Valerie Aurora <vaurora@...hat.com>, jblunck@...e.de,
	dwmw2@...radead.org, viro@...iv.linux.org.uk,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	tytso@....edu, linux-ext4@...r.kernel.org
Subject: Re: [PATCH 13/35] fallthru: ext2 fallthru support

Miklos Szeredi wrote:
> On Mon, 19 Apr 2010, Valerie Aurora wrote:
> > I don't recall there being any technical reason not to look up the
> > real inode number.  I just wrote it that we because I was lazy.  So I
> > like returning the directory's d_ino better than a single magic
> > number, but I'd at least like to try returning the real inode number
> > too.
> 
> Note, "struct dirent" doesn't have d_dev, so you really can't return
> the "real" inode number, that's on a different filesystem and just a
> random number in the context of the the readdir in question.

Agree.  Does this inappropriate inode number for the union mount's
st_dev happen with stat() on the actual files too?  That could be bad.

-- Jamie
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