linux-ext4 - Re: [PATCH 1/4] vfs: vfs-level fiemap interface

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Message-ID: <20080914134859.GB21746@infradead.org>
Date:	Sun, 14 Sep 2008 09:48:59 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Theodore Tso <tytso@....EDU>
Cc:	Anton Altaparmakov <aia21@....ac.uk>,
	linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
	akpm@...uxfoundation.org, Mark Fasheh <mfasheh@...e.com>
Subject: Re: [PATCH 1/4] vfs: vfs-level fiemap interface

On Sat, Sep 13, 2008 at 05:29:03PM -0400, Theodore Tso wrote:
> Part of the problem/frustration as we go around and round fs-devel is
> that some people would request new features to support new
> filesystems, and other people have been rejecting new features because
> it makes the interface more complicated.
> 
> In fact, the previous version of the patch had a flag for compression,
> but Cristoph Hellwig objected because he claimed there were no users
> for it.

Let's make it clear, I've said to not add it unless we have users.  And
What Anton brought up is exactly the reason for that - to support
encrypted extents we actually need more information in the structure.
That's why we need to have this broad and sometimes a little slow
discussion on fsdevel instead of just rushing in some flag for future
use that won't make any sense in the end.

(and btw, it's Christoph)

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