On Thu, Mar 12, 2009 at 05:24:33AM -0700, Daniel Phillips wrote: > On Thursday 12 March 2009, Nick Piggin wrote: > > That's interesting. Do you handle 1K block sizes with 64K page size? :) > > Not in its current incarnation. That would require 32 bytes worth of > state while the current code just has a 4 byte map (4 bits X 8 blocks). > I suppose a reasonable way to extend it would be 4 x 8 byte maps. Has > somebody spotted a 64K page? I believe SGI ship their ia64 kernels configured this way. Certainly 16k ia64 kernels are common, which would (if I understand your scheme correctly) be 8 bytes worth of state in your scheme. -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
