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Date: Mon, 28 Mar 2011 08:07:22 -0400
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH 1/6] xfs: optimize AGFL refills
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To: Alex Elder <aelder@sgi.com>
Cc: Christoph Hellwig <hch@infradead.org>, xfs@oss.sgi.com

> The reason it was not obvious is because the case you're
> treating is specifically when moving extents (blocks,
> really) between the free list and the free btrees, in
> xfs_alloc_fix_freelist().  You still need to force it
> out when allocating and freeing "actually used" blocks,
> which could also be considered "moving blocks from/to
> the AGFL."

I've updated the comment to make that more clear.

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