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

Jens Axboe (axboe@suse.de)
Sun, 6 Apr 2003 17:59:41 +0200

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.

-- 
Jens Axboe


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