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Date: Wed, 03 Jun 2015 09:19:12 -0500
From: Mark Tinguely <tinguely@sgi.com>
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Subject: Re: [PATCH] [RFC v2] xfs: byte range buffer dirty region tracking
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To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com

On 05/28/15 21:16, Dave Chinner wrote:
> Discussion:
>
> I think that we will eventually need to track multiple regions - 3
> is probably sufficient - because the nature of directory operations
> are that just about every operation modifies a header in the buffer,
> a tail section in the buffer and then some number of bytes/regions
> in the middle of the buffer.

Nod to the idea.

What made you change from your original idea of using 4 regions to 3 
regions?

--Mark.

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