Messages in this thread | | | Date | Thu, 29 Jun 2006 18:59:03 -0700 | From | Joel Becker <> | Subject | Re: Proposal and plan for ext2/3 future development work |
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On Thu, Jun 29, 2006 at 09:14:53PM -0400, Jeff Garzik wrote: > Agreed overall, though specifically for delayed allocation I think > that's an ext4 thing: > > * First off, I'm a big fan of delalloc, and (like extents) definitely > want to see the feature implemented > * Delayed allocation, properly done, requires careful interaction with > VM writeback (memory pressure or normal writeout), and may require some > minor changes to generic code in fs/* and mm/*
To be honest, I'd like to see more delayed allocation infrastructure in the VFS itself. XFS has to maintain an entire chunk of state for it, and I suspect ext4 will as well. I'd love to get delayed allocation into OCFS2 someday. Why not move to where we can share the in-memory accounting code? Now, we'd probably want to start by prototyping it in ext4 directly. Once it's stable as a filesystem feature, we can see where XFS and ext4 overlap, etc, etc. But I'd like to keep a more generic direction in mind.
Joel
--
"The suffering man ought really to consume his own smoke; there is no good in emitting smoke till you have made it into fire." - thomas carlyle
Joel Becker Principal Software Developer Oracle E-mail: joel.becker@oracle.com Phone: (650) 506-8127 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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