Date: Wed, 2 Oct 2013 09:04:48 -0700
From: Christoph Hellwig <hch@infradead.org>
To: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Christoph Hellwig <hch@infradead.org>, Al Viro <viro@ZenIV.linux.org.uk>,
        linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org,
        sandeen@redhat.com
Subject: Re: why is i_ino unsigned long, anyway?
Message-ID: <20131002160448.GA23875@infradead.org>
References: <20130912160324.GE1462@fieldses.org>
 <20130912193328.GP13318@ZenIV.linux.org.uk>
 <20130929115454.GA3953@infradead.org>
 <20131002142527.GD14808@fieldses.org>
 <20131002154320.GE14808@fieldses.org>
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On Wed, Oct 02, 2013 at 11:43:20AM -0400, J. Bruce Fields wrote:
> 
> Just for fun, I took a stab at an xfs-specific method.
> 
> Pretty much untested and probably wrong as I know nothing about xfs, but
> it does seem like it allows some minor simplifications compared to the
> common helper.
> 
> But as Christoph says other filesystems have the same problem so we
> probably want to fix the common helper anyway.

You'll need this in at least ext4, btrfs, gfs2, ocfs2 and probably more.
So fixing this for real sounds like the best deal.