Messages in this thread | | | Date | Fri, 29 Jun 2007 12:08:33 +1000 | From | David Chinner <> | Subject | Re: [RFC] fsblock |
| |
On Thu, Jun 28, 2007 at 08:20:31AM -0400, Chris Mason wrote: > On Thu, Jun 28, 2007 at 04:44:43AM +0200, Nick Piggin wrote: > > That's true but I don't think an extent data structure means we can > > become too far divorced from the pagecache or the native block size > > -- what will end up happening is that often we'll need "stuff" to map > > between all those as well, even if it is only at IO-time. > > I think the fundamental difference is that fsblock still does: > mapping_info = page->something, where something is attached on a per > page basis. What we really want is mapping_info = lookup_mapping(page),
lookup_block_mapping(page).... ;)
But yes, that is the essence of what I was saying. Thanks for describing it so concisely, Chris.
Cheers,
Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group - 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/
| |