Jeff,

It's worth a look.  I'll look at it and let you know what I think.

Jeff


Jeff Garzik wrote:
> 
> (moved to linux-fsdevel)
> 
> SGI's XFS white paper[1] describes
> 
> > XFS delays allocation of user data blocks when possible to
> > make blocks more contiguous; holding them in the buffer cache.
> > This allows XFS to make extents large without requiring the user
> > to specify extent size, and without requiring a filesystem
> > reorganizer to fix the extent sizes after the fact. This also
> > reduces the number of writes to disk and extents used for a file.
> 
> Is this sort of manipulation possible with the existing buffer cache?
> 
> Regards,
> 
>         Jeff
> 
> [1] http://www.sgi.com/Technology/xfs-whitepaper.html

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