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Re: [PATCH 1/6] xfs: optimize AGFL refills

To: Alex Elder <aelder@xxxxxxx>
Subject: Re: [PATCH 1/6] xfs: optimize AGFL refills
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 28 Mar 2011 08:07:22 -0400
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <1301086981.2537.687.camel@doink>
References: <20110322195550.260682574@xxxxxxxxxxxxxxxxxxxxxx> <20110322200137.280301318@xxxxxxxxxxxxxxxxxxxxxx> <1300833051.2875.275.camel@doink> <20110323121613.GA468@xxxxxxxxxxxxx> <1301086981.2537.687.camel@doink>
User-agent: Mutt/1.5.21 (2010-09-15)
> 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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