Re: [PATCH] Speed up the cdrw packet writing driver

From: Alan Cox
Date: Sun Aug 29 2004 - 09:57:25 EST


On Maw, 2004-08-24 at 22:57, Lee Revell wrote:
> This defaults to 8192 on my (IDE) system. IIRC this value is larger if
> 48-bit addressing is in use (drive size > ~128GB). It does not seem
> right to me that the size of your hard drive should dictate the amount
> of I/O allowed to be in flight.

The largest I/O allowed in LBA28 mode is 256 sectors, and in LBA48
rather larger. Its a limit of the command functionality. The tradeoff
the other way is that LBA28 commands are slightly faster to issue.

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