Re: [RFC] fsblock
From: David Chinner <hidden>
Date: 2007-06-29 02:08:59
Also in:
linux-fsdevel, lkml
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:quoted
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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>