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Re: Review: factor extracting extent size hints from the inode

To: David Chinner <dgc@xxxxxxx>
Subject: Re: Review: factor extracting extent size hints from the inode
From: Nathan Scott <nscott@xxxxxxxxxx>
Date: Tue, 12 Jun 2007 16:39:46 +1000
Cc: Vlad Apostolov <vapo@xxxxxxx>, xfs-dev <xfs-dev@xxxxxxx>, xfs-oss <xfs@xxxxxxxxxxx>
In-reply-to: <20070612060800.GP86004887@xxxxxxx>
Organization: Aconex
References: <20070604052333.GR85884050@xxxxxxx> <466E2B76.7010707@xxxxxxx> <20070612060800.GP86004887@xxxxxxx>
Reply-to: nscott@xxxxxxxxxx
Sender: xfs-bounce@xxxxxxxxxxx
On Tue, 2007-06-12 at 16:08 +1000, David Chinner wrote:
> 
> If you use this method of setting the extent size hint, then you will
> *always* get the XFS_DIFLAG_EXTSIZE flag set when you have an extent
> size hint, regardless of whether it is a realtime file or not. 

The extsize flag is relatively recent though, and traditionally
realtime files could have had their extsize explicitly set with
no associated extsize flag (thats just how it was implemented,
originally, in realtime).

But, not many people use realtime, even fewer would be using the
extent size option with realtime (like, none?, on Linux anyway)
... so, you could pretty much make whatever rule you like.

cheers.

-- 
Nathan


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