Re: [00/41] Large Blocksize Support V7 (adds memmap support)

[Linus Torvalds <torvalds@linux-foundation.org>]

On Wed, 19 Sep 2007, Nathan Scott wrote:
> 
> FWIW (and I hate to let reality get in the way of a good conspiracy) -
> all SGI systems have always defaulted to using 4K blocksize filesystems;

Yes. And I've been told that:

> there's very few customers who would use larger

.. who apparently would like to  move to x86-64. That was what people 
implied at the kernel summit.

>						 especially as the Linux
> kernel limitations in this area are well known.  There's no "16K mess"
> that SGI is trying to clean up here (and SGI have offered both IA64 and
> x86_64 systems for some time now, so not sure how you came up with that
> whacko theory).

Well, if that is the case, then I vote that we drop the whole patch-series 
entirely. It clearly has no reason for existing at all.

There is *no* valid reason for 16kB blocksizes unless you have legacy 
issues. The performance issues have nothing to do with the block-size, and 
should be solvable by just making sure that your stupid "state of the art" 
crap SCSI controller gets contiguous physical memory, which is best done 
in the read-ahead code.

So get your stories straight, people.

			Linus
-
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/