Re: [PATCH] take 48-bit lba a bit further

[Jens Axboe <axboe@suse.de>]

On Sun, Apr 06 2003, Jens Axboe wrote:
> On Sun, Apr 06 2003, John Bradford wrote:
> > I originally thought that we might only be honouring 512Kb requests
> > for blocks over the 28-bit limit, which Jens corrected me on, but
> > maybe we *should* only do 512Kb requests on high block number, where
> > we have to use 48-bit anyway.
> 
> That makes little sense in practice, and is not currently even doable
> within the block layer.  You got the limits wrong, btw, it's 128kb max
> for 28-bit. A single 512KiB request will have a lower per-kb overhead
> with 48-bit lba than a single 128kb on 28-bit would.

I should mention that the 512KiB number is one I chose, as a good large
request size. You could as high as 32MiB.

-- 
Jens Axboe